Molecular formula
C17H23NO4
713 compounds have this formula on CompoundList.
- Molar mass
- 305.37g/mol
- Monoisotopic mass
- 305.1627Da
- Atoms
- 45
- Elements
- 4
- Rings plus double bonds
- 7
The formula C17H23NO4 describes a molecule made of 17 carbon atoms, 23 hydrogen atoms, 1 nitrogen atom and 4 oxygen atoms. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- C Carbon × 1766.86%12.011 × 17 = 204.187 g/mol
- H Hydrogen × 237.59%1.008 × 23 = 23.184 g/mol
- N Nitrogen × 14.59%14.007 × 1 = 14.007 g/mol
- O Oxygen × 420.96%15.999 × 4 = 63.996 g/mol
Look up another formula
Compounds with the formula C17H23NO4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 501 to 600 of 713 compounds
![3-(3-{[(tert-Butoxy)carbonyl]amino}phenyl)-2,2-dimethylcyclopropane-1-carboxylic acid chemical structure, C17H23NO4, CAS 2228170-77-0](/s/SBEJLDQMTPTLCA-UHFFFAOYSA-N.svg)
3-(3-{[(tert-Butoxy)carbonyl]amino}phenyl)-2,2-dimethylcyclopropane-1-carboxylic acid
CAS 2228170-77-0C17H23NO4
![tert-Butyl N-[2-(3,4-dihydro-1H-2-benzopyran-6-yl)-1-oxopropan-2-yl]carbamate chemical structure, C17H23NO4, CAS 2228761-74-6](/s/UQRFEPMMVLMESA-UHFFFAOYSA-N.svg)
tert-Butyl N-[2-(3,4-dihydro-1H-2-benzopyran-6-yl)-1-oxopropan-2-yl]carbamate
CAS 2228761-74-6C17H23NO4
![tert-Butyl N-[1-(3,4-dihydro-2H-1-benzopyran-3-yl)-2-oxoethyl]-N-methylcarbamate chemical structure, C17H23NO4, CAS 2229326-21-8](/s/QBWNPLIEQALFJG-UHFFFAOYSA-N.svg)
tert-Butyl N-[1-(3,4-dihydro-2H-1-benzopyran-3-yl)-2-oxoethyl]-N-methylcarbamate
CAS 2229326-21-8C17H23NO4
![2-[1-(4-{[(tert-Butoxy)carbonyl]amino}phenyl)cyclobutyl]acetic acid chemical structure, C17H23NO4, CAS 2228810-61-3](/s/LQHXUDRKJNFTPN-UHFFFAOYSA-N.svg)
2-[1-(4-{[(tert-Butoxy)carbonyl]amino}phenyl)cyclobutyl]acetic acid
CAS 2228810-61-3C17H23NO4
![1-[(3-{[(tert-Butoxy)carbonyl]amino}-4-methylphenyl)methyl]cyclopropane-1-carboxylic acid chemical structure, C17H23NO4, CAS 2229482-77-1](/s/BSVGGSXUZLONDK-UHFFFAOYSA-N.svg)
1-[(3-{[(tert-Butoxy)carbonyl]amino}-4-methylphenyl)methyl]cyclopropane-1-carboxylic acid
CAS 2229482-77-1C17H23NO4
![tert-Butyl N-[2-(2,3-dihydro-1-benzofuran-7-yl)-1-oxopropan-2-yl]-N-methylcarbamate chemical structure, C17H23NO4, CAS 2228712-14-7](/s/XXCHHEWQNAHDLP-UHFFFAOYSA-N.svg)
tert-Butyl N-[2-(2,3-dihydro-1-benzofuran-7-yl)-1-oxopropan-2-yl]-N-methylcarbamate
CAS 2228712-14-7C17H23NO4
![tert-Butyl N-[4-(1-acetylcyclopropyl)-3-methoxyphenyl]carbamate chemical structure, C17H23NO4, CAS 2229224-17-1](/s/GDPQZMLQZSRNFX-UHFFFAOYSA-N.svg)
tert-Butyl N-[4-(1-acetylcyclopropyl)-3-methoxyphenyl]carbamate
CAS 2229224-17-1C17H23NO4
![2-[1-(3-{[(tert-Butoxy)carbonyl]amino}phenyl)cyclobutyl]acetic acid chemical structure, C17H23NO4, CAS 2228815-23-2](/s/HFSLAWTYSGJWBW-UHFFFAOYSA-N.svg)
2-[1-(3-{[(tert-Butoxy)carbonyl]amino}phenyl)cyclobutyl]acetic acid
CAS 2228815-23-2C17H23NO4
![tert-Butyl N-methyl-N-[1-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)-2-oxoethyl]carbamate chemical structure, C17H23NO4, CAS 2228853-78-7](/s/PVOGDTXCNVDFJM-UHFFFAOYSA-N.svg)
tert-Butyl N-methyl-N-[1-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)-2-oxoethyl]carbamate
CAS 2228853-78-7C17H23NO4
![tert-Butyl N-[2-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)-1-oxopropan-2-yl]carbamate chemical structure, C17H23NO4, CAS 2228774-80-7](/s/MTJFOGQGUGOBJM-UHFFFAOYSA-N.svg)
tert-Butyl N-[2-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)-1-oxopropan-2-yl]carbamate
CAS 2228774-80-7C17H23NO4
![tert-Butyl N-[1-(2,3-dihydro-1-benzofuran-5-yl)-3-oxopropan-2-yl]-N-methylcarbamate chemical structure, C17H23NO4, CAS 2229370-81-2](/s/CJLPZHXXMGBLJL-UHFFFAOYSA-N.svg)
tert-Butyl N-[1-(2,3-dihydro-1-benzofuran-5-yl)-3-oxopropan-2-yl]-N-methylcarbamate
CAS 2229370-81-2C17H23NO4
![tert-Butyl N-[2-(2,3-dihydro-1-benzofuran-5-yl)-1-oxopropan-2-yl]-N-methylcarbamate chemical structure, C17H23NO4, CAS 2229480-80-0](/s/INRRXJCHYFJRDF-UHFFFAOYSA-N.svg)
tert-Butyl N-[2-(2,3-dihydro-1-benzofuran-5-yl)-1-oxopropan-2-yl]-N-methylcarbamate
CAS 2229480-80-0C17H23NO4
![2-[1-(2-{[(tert-Butoxy)carbonyl]amino}phenyl)cyclobutyl]acetic acid chemical structure, C17H23NO4, CAS 2228461-01-4](/s/JUCASISKMPZZQH-UHFFFAOYSA-N.svg)
2-[1-(2-{[(tert-Butoxy)carbonyl]amino}phenyl)cyclobutyl]acetic acid
CAS 2228461-01-4C17H23NO4
![tert-Butyl N-[1-(3,4-dihydro-1H-2-benzopyran-6-yl)-2-oxoethyl]-N-methylcarbamate chemical structure, C17H23NO4, CAS 2228376-88-1](/s/CPZUQFXAAHKWLK-UHFFFAOYSA-N.svg)
tert-Butyl N-[1-(3,4-dihydro-1H-2-benzopyran-6-yl)-2-oxoethyl]-N-methylcarbamate
CAS 2228376-88-1C17H23NO4
![tert-Butyl N-[2-(but-3-yn-1-yl)-4,5-dimethoxyphenyl]carbamate chemical structure, C17H23NO4, CAS 2229324-26-7](/s/XWGJHIUTLKEIAN-UHFFFAOYSA-N.svg)
tert-Butyl N-[2-(but-3-yn-1-yl)-4,5-dimethoxyphenyl]carbamate
CAS 2229324-26-7C17H23NO4
![tert-Butyl N-[5-(but-3-yn-1-yl)-2,3-dimethoxyphenyl]carbamate chemical structure, C17H23NO4, CAS 2228381-48-2](/s/KGDPXRRCXWCEIK-UHFFFAOYSA-N.svg)
tert-Butyl N-[5-(but-3-yn-1-yl)-2,3-dimethoxyphenyl]carbamate
CAS 2228381-48-2C17H23NO4
![tert-Butyl N-[4-(1-acetylcyclopropyl)-2-methoxyphenyl]carbamate chemical structure, C17H23NO4, CAS 2229463-64-1](/s/YTLHXTWISKLPOF-UHFFFAOYSA-N.svg)
tert-Butyl N-[4-(1-acetylcyclopropyl)-2-methoxyphenyl]carbamate
CAS 2229463-64-1C17H23NO4
![tert-Butyl N-[5-(but-3-yn-2-yl)-2,3-dimethoxyphenyl]carbamate chemical structure, C17H23NO4, CAS 2229133-59-7](/s/NRPYBGQSYZSXRP-UHFFFAOYSA-N.svg)
tert-Butyl N-[5-(but-3-yn-2-yl)-2,3-dimethoxyphenyl]carbamate
CAS 2229133-59-7C17H23NO4
![1-[(4-{[(tert-Butoxy)carbonyl]amino}-3-methylphenyl)methyl]cyclopropane-1-carboxylic acid chemical structure, C17H23NO4, CAS 2229533-21-3](/s/BRUCSVYGIQEUPY-UHFFFAOYSA-N.svg)
1-[(4-{[(tert-Butoxy)carbonyl]amino}-3-methylphenyl)methyl]cyclopropane-1-carboxylic acid
CAS 2229533-21-3C17H23NO4
![1-({[(tert-Butoxy)carbonyl]amino}(phenyl)methyl)cyclobutane-1-carboxylic acid chemical structure, C17H23NO4, CAS 2229140-14-9](/s/YLLDGNGXYQBWFV-UHFFFAOYSA-N.svg)
1-({[(tert-Butoxy)carbonyl]amino}(phenyl)methyl)cyclobutane-1-carboxylic acid
CAS 2229140-14-9C17H23NO4
![2-[1-({[(tert-Butoxy)carbonyl]amino}(phenyl)methyl)cyclopropyl]acetic acid chemical structure, C17H23NO4, CAS 2229580-96-3](/s/GFGFJDZJZJXLEE-UHFFFAOYSA-N.svg)
2-[1-({[(tert-Butoxy)carbonyl]amino}(phenyl)methyl)cyclopropyl]acetic acid
CAS 2229580-96-3C17H23NO4
![tert-Butyl N-[3-(1-acetylcyclopropyl)-4-methoxyphenyl]carbamate chemical structure, C17H23NO4, CAS 2228653-52-7](/s/SHVYDZFDNIZJMP-UHFFFAOYSA-N.svg)
tert-Butyl N-[3-(1-acetylcyclopropyl)-4-methoxyphenyl]carbamate
CAS 2228653-52-7C17H23NO4
![tert-Butyl N-[2-hydroxy-3-methoxy-5-(2-methylbut-3-yn-2-yl)phenyl]carbamate chemical structure, C17H23NO4, CAS 2228203-55-0](/s/YQCTXYQTYLCVDF-UHFFFAOYSA-N.svg)
tert-Butyl N-[2-hydroxy-3-methoxy-5-(2-methylbut-3-yn-2-yl)phenyl]carbamate
CAS 2228203-55-0C17H23NO4
![1-(2-{[(tert-Butoxy)carbonyl]amino}phenyl)-2,2-dimethylcyclopropane-1-carboxylic acid chemical structure, C17H23NO4, CAS 2228984-49-2](/s/GQZGSEKIOHXPCF-UHFFFAOYSA-N.svg)
1-(2-{[(tert-Butoxy)carbonyl]amino}phenyl)-2,2-dimethylcyclopropane-1-carboxylic acid
CAS 2228984-49-2C17H23NO4
- rac-(1R,3R)-3-(2-{[(tert-Butoxy)carbonyl]amino}phenyl)-2,2-dimethylcyclopropane-1-carboxylic acid2227904-07-4C17H23NO4
- 1-(2-{[(tert-Butoxy)carbonyl]amino}-2-phenylethyl)cyclopropane-1-carboxylic acid2229390-30-9C17H23NO4
- tert-Butyl N-[2-(but-3-yn-2-yl)-4,5-dimethoxyphenyl]carbamate2229339-48-2C17H23NO4
- 2-[1-(4-{[(tert-Butoxy)carbonyl]amino}-3-methylphenyl)cyclopropyl]acetic acid2228798-94-3C17H23NO4
- 1-{[(tert-Butoxy)carbonyl]amino}-2-(2,5-dimethylphenyl)cyclopropane-1-carboxylic acid2138279-23-7C17H23NO4
- rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-tert-butylpyrrolidine-3-carboxylic acid2350527-19-2C17H23NO4
- 3-[(1S,3R)-3-{[(Benzyloxy)carbonyl]amino}-2,2-dimethylcyclobutyl]propanoic acid2757832-58-7C17H23NO4
- 3-{1-[(Benzyloxy)carbonyl]azepan-3-yl}propanoic acid2757925-31-6C17H23NO4
- 1-(4-{[(tert-Butoxy)carbonyl]amino}-3-methylphenyl)cyclobutane-1-carboxylic acid2228999-57-1C17H23NO4
- 1-(4-{[(tert-Butoxy)carbonyl]amino}phenyl)-2,2-dimethylcyclopropane-1-carboxylic acid2229256-57-7C17H23NO4
- 4-(3-{[(Benzyloxy)carbonyl]amino}cyclopentyl)butanoic acid2757895-79-5C17H23NO4
- tert-Butyl 4-hydroxy-3,4-dihydrospiro[1-benzopyran-2,3'-pyrrolidine]-1'-carboxylate2413904-68-2C17H23NO4
- tert-Butyl N-{2-[(2,3-dihydro-1-benzofuran-5-yl)methyl]-1-oxopropan-2-yl}carbamate2228724-65-8C17H23NO4
- tert-Butyl N-[2-(3,4-dihydro-2H-1-benzopyran-3-yl)-1-oxopropan-2-yl]carbamate2228498-84-6C17H23NO4
- Methyl 3-{[(tert-butoxy)carbonyl]amino}-1-phenylcyclobutane-1-carboxylate2803866-18-2C17H23NO4
- 5-{[(Benzyloxy)carbonyl]amino}cyclooctane-1-carboxylic acid2138221-20-0C17H23NO4
- 1-({[(Benzyloxy)carbonyl]amino}methyl)-3-propylcyclobutane-1-carboxylic acid2137547-52-3C17H23NO4
- 3-{[(Benzyloxy)carbonyl]amino}-3-cyclopropylhexanoic acid2160683-47-4C17H23NO4
- 2-{[(Benzyloxy)carbonyl]amino}-3-(1-ethylcyclobutyl)propanoic acid1869460-12-7C17H23NO4
- 2-{[(Benzyloxy)carbonyl]amino}-4-cyclobutylpentanoic acid1998965-01-7C17H23NO4
- 3-{[(Benzyloxy)carbonyl]amino}-3-(3,3-dimethylcyclobutyl)propanoic acid2171972-56-6C17H23NO4
- 3-{[(Benzyloxy)carbonyl]amino}-3-(2,2-dimethylcyclopropyl)butanoic acid2141567-53-3C17H23NO4
- 2-(1-{[(Benzyloxy)carbonyl]amino}-2-methylcyclohexyl)acetic acid2140986-83-8C17H23NO4
- rac-(1R,2S)-2-{[(Benzyloxy)carbonyl]amino}cyclooctane-1-carboxylic acid2227895-14-7C17H23NO4
- 2-(1-{[(Benzyloxy)carbonyl]amino}-3-(propan-2-yl)cyclobutyl)acetic acid2172176-54-2C17H23NO4
- 2-{[(Benzyloxy)carbonyl]amino}-5,6-dimethylhept-5-enoic acid2171461-25-7C17H23NO4
- tert-Butyl 4-(2,3-dihydro-1,4-benzodioxin-6-yl)pyrrolidine-3-carboxylate2171807-44-4C17H23NO4
- 3-{[(Benzyloxy)carbonyl]amino}-3-cyclopentylbutanoic acid2150939-65-2C17H23NO4
- 1-[(tert-Butoxy)carbonyl]-2-(4-methylphenyl)pyrrolidine-2-carboxylic acid2172055-98-8C17H23NO4
- 1-{[(tert-Butoxy)carbonyl]amino}-2-(3,5-dimethylphenyl)cyclopropane-1-carboxylic acid2138344-09-7C17H23NO4
- 3-(2-{[(Benzyloxy)carbonyl]amino}cyclohexyl)propanoic acid2279290-44-5C17H23NO4
- 2-{2-[(tert-Butoxy)carbonyl]-5-methyl-1,2,3,4-tetrahydroisoquinolin-1-yl}acetic acid2172483-61-1C17H23NO4
- 1-(3-{[(tert-Butoxy)carbonyl]amino}phenyl)-2,2-dimethylcyclopropane-1-carboxylic acid2229164-05-8C17H23NO4
- tert-Butyl N-[2-(1-acetylcyclopropyl)-5-methoxyphenyl]carbamate2228941-71-5C17H23NO4
- 3-{[(Benzyloxy)carbonyl]amino}-3-cyclobutylpentanoic acid2172129-41-6C17H23NO4
- 2-{1-[(Benzyloxy)carbonyl]azocan-5-yl}acetic acid2580232-61-5C17H23NO4
- 1-(2-{[(Benzyloxy)carbonyl]amino}ethyl)cyclohexane-1-carboxylic acid2580187-41-1C17H23NO4
- 1-[(Benzyloxy)carbonyl]-4-(propan-2-yl)piperidine-4-carboxylic acid2360054-71-1C17H23NO4
- 2-(6-{[(tert-Butoxy)carbonyl]amino}-5,6,7,8-tetrahydronaphthalen-2-yl)acetic acid2580225-76-7C17H23NO4
- 3-{1-[(Benzyloxy)carbonyl]piperidin-4-yl}-2-methylpropanoic acid2580210-71-3C17H23NO4
- (2S)-2-{[(tert-Butoxy)carbonyl](cyclopropyl)amino}-3-phenylpropanoic acid2580097-29-4C17H23NO4
- 1-[(tert-Butoxy)carbonyl]-2,3,3-trimethyl-2,3-dihydro-1H-indole-2-carboxylic acid2580227-62-7C17H23NO4
- rac-(1R,3S)-3-(1-{[(Benzyloxy)carbonyl]amino}ethyl)-2,2-dimethylcyclobutane-1-carboxylic acid2580128-09-0C17H23NO4
- 2-{[(Benzyloxy)carbonyl](cyclopropylmethyl)amino}-2-methylbutanoic acid2649075-53-4C17H23NO4
- 2-{1-[(Benzyloxy)carbonyl]-5,5-dimethylpiperidin-2-yl}acetic acid1823303-15-6C17H23NO4
- 3-(3-{[(Benzyloxy)carbonyl]amino}cyclohexyl)propanoic acid2580227-53-6C17H23NO4
- rac-(3R,4R)-1-[(Benzyloxy)carbonyl]-4-(2-methylpropyl)pyrrolidine-3-carboxylic acid2350575-46-9C17H23NO4
- 1-{[(tert-Butoxy)carbonyl]amino}-2,2-dimethyl-2,3-dihydro-1H-indene-5-carboxylic acid2580250-41-3C17H23NO4
- 1-[(tert-Butoxy)carbonyl]-3-(3-methylphenyl)pyrrolidine-2-carboxylic acid2386711-80-2C17H23NO4
- 2-[1-({[(Benzyloxy)carbonyl]amino}methyl)-3-methylcyclopentyl]acetic acid2580255-16-7C17H23NO4
- 2-{1-[(Benzyloxy)carbonyl]azocan-4-yl}acetic acid2580219-52-7C17H23NO4
- 2-(2-{[(tert-Butoxy)carbonyl]amino}-1,2,3,4-tetrahydronaphthalen-2-yl)acetic acid2580243-24-7C17H23NO4
- 2-(1-{[(Benzyloxy)carbonyl]amino}-4-methylcyclohexyl)acetic acid2580233-68-5C17H23NO4
- (1R,3S)-3-{[(Benzyloxy)carbonyl]amino}-1,2,2-trimethylcyclopentane-1-carboxylic acid2580095-07-2C17H23NO4
- 2-[(tert-Butoxy)carbonyl]-3,3-dimethyl-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid2580178-22-7C17H23NO4
- 2-{1-[(Benzyloxy)carbonyl]-2,2-dimethylpiperidin-4-yl}acetic acid2639424-79-4C17H23NO4
- 3-{1-[(Benzyloxy)carbonyl]piperidin-3-yl}-2-methylpropanoic acid2639447-29-1C17H23NO4
- 1-[(Benzyloxy)carbonyl]-3-(propan-2-yl)piperidine-4-carboxylic acid2639463-07-1C17H23NO4
- 3-{1-[(Benzyloxy)carbonyl]piperidin-2-yl}-2-methylpropanoic acid2639453-39-5C17H23NO4
- 3-{1-[(Benzyloxy)carbonyl]-3-methylpiperidin-4-yl}propanoic acid2639425-45-7C17H23NO4
- rac-3-[(3R,6S)-1-[(Benzyloxy)carbonyl]-6-methylpiperidin-3-yl]propanoic acid2639392-09-7C17H23NO4
- 4-{[(Benzyloxy)carbonyl](ethyl)amino}cyclohexane-1-carboxylic acid2639458-94-7C17H23NO4
- 4-{1-[(Benzyloxy)carbonyl]piperidin-2-yl}butanoic acid2639416-66-1C17H23NO4
- 3-{[(Benzyloxy)carbonyl](cyclohexyl)amino}propanoic acid2639411-55-3C17H23NO4
- 2-{1-[(Benzyloxy)carbonyl]piperidin-3-yl}butanoic acid2303247-76-7C17H23NO4
- 2-{[(tert-Butoxy)carbonyl](cyclopentyl)amino}benzoic acid2639424-02-3C17H23NO4
- 2-{1-[(Benzyloxy)carbonyl]-2,5,5-trimethylpyrrolidin-2-yl}acetic acid2639453-85-1C17H23NO4
- 1-[(Benzyloxy)carbonyl]-2,4,6-trimethylpiperidine-3-carboxylic acid2639427-74-8C17H23NO4
- 1-[(tert-Butoxy)carbonyl]-5,8-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxylic acid2639444-97-4C17H23NO4
- 1-[(tert-Butoxy)carbonyl]-4,6-dimethyl-1,2,3,4-tetrahydroquinoline-8-carboxylic acid2639464-48-3C17H23NO4
- 3-{1-[(tert-Butoxy)carbonyl]-5-methyl-2,3-dihydro-1H-indol-3-yl}propanoic acid2113975-74-7C17H23NO4
- 2-{1-[(Benzyloxy)carbonyl]piperidin-2-yl}-2-methylpropanoic acid2387013-80-9C17H23NO4
- (2S)-2-{[(tert-Butoxy)carbonyl]amino}-3-(2,3-dihydro-1H-inden-5-yl)propanoic acid2349876-45-3C17H23NO4
- 2-{Benzyl[(tert-butoxy)carbonyl]amino}-2-cyclopropylacetic acid2386943-59-3C17H23NO4
- (2R)-2-{[(tert-Butoxy)carbonyl]amino}-3-[3-(prop-2-en-1-yl)phenyl]propanoic acid2679941-86-5C17H23NO4
- Benzyl 2-(4-hydroxyoxan-3-yl)pyrrolidine-1-carboxylate2680802-02-0C17H23NO4
Frequently asked questions
What is the molar mass of C17H23NO4?
The molar mass of C17H23NO4 is 305.37 g/mol, calculated from standard atomic weights for 17 carbon atoms, 23 hydrogen atoms, 1 nitrogen atom and 4 oxygen atoms. The monoisotopic mass is 305.1627 Da.
How many compounds have the formula C17H23NO4?
CompoundList lists 713 compounds with the molecular formula C17H23NO4, including 3-(3-{[(tert-Butoxy)carbonyl]amino}phenyl)-2,2-dimethylcyclopropane-1-carboxylic acid, tert-Butyl N-[2-(3,4-dihydro-1H-2-benzopyran-6-yl)-1-oxopropan-2-yl]carbamate, tert-Butyl N-[1-(3,4-dihydro-2H-1-benzopyran-3-yl)-2-oxoethyl]-N-methylcarbamate. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.
What is the degree of unsaturation of C17H23NO4?
C17H23NO4 has a degree of unsaturation of 7. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.