Molecular formula
C25H22N2O6
155 compounds have this formula on CompoundList.
- Molar mass
- 446.46g/mol
- Monoisotopic mass
- 446.1478Da
- Atoms
- 55
- Elements
- 4
- Rings plus double bonds
- 16
The formula C25H22N2O6 describes a molecule made of 25 carbon atoms, 22 hydrogen atoms, 2 nitrogen atoms and 6 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 × 2567.26%12.011 × 25 = 300.275 g/mol
- H Hydrogen × 224.97%1.008 × 22 = 22.176 g/mol
- N Nitrogen × 26.27%14.007 × 2 = 28.014 g/mol
- O Oxygen × 621.50%15.999 × 6 = 95.994 g/mol
Look up another formula
Compounds with the formula C25H22N2O6
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 155 compounds
![2-[3-(3,4-Dimethoxyphenyl)-2,4-dioxo-1-quinazolinyl]acetic acid (phenylmethyl) ester chemical structure, C25H22N2O6, CAS 899923-81-0](/s/OVVOBCPUDNVSCO-UHFFFAOYSA-N.svg)
2-[3-(3,4-Dimethoxyphenyl)-2,4-dioxo-1-quinazolinyl]acetic acid (phenylmethyl) ester
CAS 899923-81-0C25H22N2O6
(R)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(4-nitrophenyl)butanoic acid
CAS 269398-78-9C25H22N2O6
Carbamic acid, (methylenedi-4,1-phenylene)bis-, bis(2-furanylmethyl) ester
CAS 60387-40-8C25H22N2O6
![N-[4-[(2,6-Dimethoxybenzoyl)amino]-2-methoxyphenyl]-1-benzofuran-2-carboxamide chemical structure, C25H22N2O6, CAS 702647-49-2](/s/YBJAQPIASAVAMW-UHFFFAOYSA-N.svg)
N-[4-[(2,6-Dimethoxybenzoyl)amino]-2-methoxyphenyl]-1-benzofuran-2-carboxamide
CAS 702647-49-2C25H22N2O6
![4-{[2-[(2-Methoxybenzoyl)amino]-3-(4-methoxyphenyl)acryloyl]amino}benzoic acid chemical structure, C25H22N2O6, CAS 354549-53-4](/s/ZXAVQMGCJLQBST-RCCKNPSSSA-N.svg)
4-{[2-[(2-Methoxybenzoyl)amino]-3-(4-methoxyphenyl)acryloyl]amino}benzoic acid
CAS 354549-53-4C25H22N2O6
1-(2-Oxo-2-phenylethyl)-3-(3,4,5-trimethoxyphenyl)quinazoline-2,4(1H,3H)-dione
CAS 899921-60-9C25H22N2O6
3-Hydroxy-5-(4-hydroxy-3-methoxyphenyl)-4-(4-methoxybenzoyl)-1-(3-pyridinylmethyl)-1,5-dihydro-2H-pyrrol-2-one
CAS 370576-65-1C25H22N2O6
![N-(2-Methoxy-4-{[(4-methoxyphenoxy)acetyl]amino}phenyl)-1-benzofuran-2-carboxamide chemical structure, C25H22N2O6, CAS 432015-44-6](/s/JWXNJYIQJVBOBC-UHFFFAOYSA-N.svg)
N-(2-Methoxy-4-{[(4-methoxyphenoxy)acetyl]amino}phenyl)-1-benzofuran-2-carboxamide
CAS 432015-44-6C25H22N2O6
![3-Hydroxy-3-[2-(4-methoxy-3-nitrophenyl)-2-oxoethyl]-1-(2-phenylethyl)-1,3-dihydro-2H-indol-2-one chemical structure, C25H22N2O6, CAS 421579-04-6](/s/NELMJESBALFIGL-UHFFFAOYSA-N.svg)
3-Hydroxy-3-[2-(4-methoxy-3-nitrophenyl)-2-oxoethyl]-1-(2-phenylethyl)-1,3-dihydro-2H-indol-2-one
CAS 421579-04-6C25H22N2O6
(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(4-nitrophenyl)butanoic acid
CAS 270062-88-9C25H22N2O6
methanolate chemical structure, C25H22N2O6, CAS 378768-20-8](/s/TYALCQSCPYLKAP-XTQSDGFTSA-N.svg)
(E)-[2-(3,4-Dimethoxyphenyl)-4,5-dioxo-1-(pyridinium-2-yl)pyrrolidin-3-ylidene](4-methoxyphenyl)methanolate
CAS 378768-20-8C25H22N2O6
![Ethyl 4-[3-(2-furyl)-2-(2-methylphenyl)-4,6-dioxohexahydro-5H-pyrrolo[3,4-d]isoxazol-5-yl]benzoate chemical structure, C25H22N2O6, CAS 1005052-92-5](/s/KRTFUMFAYMRUBY-UHFFFAOYSA-N.svg)
Ethyl 4-[3-(2-furyl)-2-(2-methylphenyl)-4,6-dioxohexahydro-5H-pyrrolo[3,4-d]isoxazol-5-yl]benzoate
CAS 1005052-92-5C25H22N2O6
![1-(2,3-Dimethoxyphenyl)-6,7-dimethyl-2-(5-methylisoxazol-3-yl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione chemical structure, C25H22N2O6, CAS 874396-35-7](/s/FCNZDEQTLZDRFR-UHFFFAOYSA-N.svg)
1-(2,3-Dimethoxyphenyl)-6,7-dimethyl-2-(5-methylisoxazol-3-yl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione
CAS 874396-35-7C25H22N2O6
5-(3,4-Dimethoxyphenyl)-3-hydroxy-4-(3-methoxybenzoyl)-1-(pyridin-2-yl)-1H-pyrrol-2(5H)-one
CAS 618418-46-5C25H22N2O6
Z-D-Asn(xan)-OH
CAS 1313054-82-8C25H22N2O6
![2-Amino-4-{4-methoxy-3-[(3-methoxyphenoxy)methyl]phenyl}-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile chemical structure, C25H22N2O6, CAS 625368-51-6](/s/GLLNYKFPMSJMRN-UHFFFAOYSA-N.svg)
2-Amino-4-{4-methoxy-3-[(3-methoxyphenoxy)methyl]phenyl}-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile
CAS 625368-51-6C25H22N2O6
![1-(4-Ethoxy-3-methoxyphenyl)-7-methyl-2-(5-methylisoxazol-3-yl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione chemical structure, C25H22N2O6, CAS 874396-52-8](/s/LLDXJAWHNLCLID-UHFFFAOYSA-N.svg)
1-(4-Ethoxy-3-methoxyphenyl)-7-methyl-2-(5-methylisoxazol-3-yl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione
CAS 874396-52-8C25H22N2O6
4-(4-(Allyloxy)benzoyl)-3-hydroxy-5-(3-methoxyphenyl)-1-(5-methylisoxazol-3-yl)-1H-pyrrol-2(5H)-one
CAS 618876-91-8C25H22N2O6
4-(4-(Allyloxy)benzoyl)-3-hydroxy-5-(2-methoxyphenyl)-1-(5-methylisoxazol-3-yl)-1H-pyrrol-2(5H)-one
CAS 618876-90-7C25H22N2O6
5-(4-(Allyloxy)phenyl)-3-hydroxy-4-(4-methoxybenzoyl)-1-(5-methylisoxazol-3-yl)-1H-pyrrol-2(5H)-one
CAS 618876-33-8C25H22N2O6
4-(4-(Allyloxy)benzoyl)-3-hydroxy-5-(4-methoxyphenyl)-1-(5-methylisoxazol-3-yl)-1H-pyrrol-2(5H)-one
CAS 618876-92-9C25H22N2O6
Z-Asn(xan)-OH
CAS 327981-00-0C25H22N2O6
![Methyl 4-(3-(5-methylfuran-2-yl)-4,6-dioxo-2-(o-tolyl)tetrahydro-2H-pyrrolo[3,4-d]isoxazol-5(3H)-yl)benzoate chemical structure, C25H22N2O6, CAS 1005271-08-8](/s/OCZMTJMEJFNJHE-UHFFFAOYSA-N.svg)
Methyl 4-(3-(5-methylfuran-2-yl)-4,6-dioxo-2-(o-tolyl)tetrahydro-2H-pyrrolo[3,4-d]isoxazol-5(3H)-yl)benzoate
CAS 1005271-08-8C25H22N2O6
![(4E)-4-[Hydroxy(4-methoxyphenyl)methylidene]-1-(5-methyl-1,2-oxazol-3-yl)-5-[3-(prop-2-en-1-yloxy)phenyl]pyrrolidine-2,3-dione chemical structure, C25H22N2O6, CAS 618876-39-4](/s/RDDYVXIXELOEQD-XTQSDGFTSA-N.svg)
(4E)-4-[Hydroxy(4-methoxyphenyl)methylidene]-1-(5-methyl-1,2-oxazol-3-yl)-5-[3-(prop-2-en-1-yloxy)phenyl]pyrrolidine-2,3-dione
CAS 618876-39-4C25H22N2O6
- 3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-4-(4-nitrophenyl)butanoic acid1160573-33-0C25H22N2O6
- N-Phenyl-3-(3,4,5-trimethoxybenzamido)benzofuran-2-carboxamide887885-81-6C25H22N2O6
- 3-(3,5-Dimethoxybenzamido)-N-(2-methoxyphenyl)benzofuran-2-carboxamide862830-01-1C25H22N2O6
- 3-(2-(4-Methoxyphenoxy)acetamido)-N-(2-methoxyphenyl)benzofuran-2-carboxamide862830-32-8C25H22N2O6
- 3-(2-(2-Methoxyphenoxy)acetamido)-N-(4-methoxyphenyl)benzofuran-2-carboxamide847404-75-5C25H22N2O6
- 3-(2-(3-Methoxyphenoxy)acetamido)-N-(4-methoxyphenyl)benzofuran-2-carboxamide847404-78-8C25H22N2O6
- 3-(2-(4-Methoxyphenoxy)acetamido)-N-(4-methoxyphenyl)benzofuran-2-carboxamide847404-82-4C25H22N2O6
- 3-[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)furan-2-amido]cyclobutane-1-carboxylic acid2171197-85-4C25H22N2O6
- (3'E)-3'-[1-Benzofuran-2-yl(hydroxy)methylidene]-1'-(3-methoxypropyl)-1-methylspiro[indole-3,2'-pyrrolidine]-2,4',5'(1H)-trione843669-95-4C25H22N2O6
- 3-[1-(1,3-Dioxaindan-5-yl)-2-nitroethyl]-2-(3,4-dimethoxyphenyl)-1H-indole380352-24-9C25H22N2O6
- N-[4-(2,3-Dihydro-1,4-benzodioxin-3-ylmethylcarbamoyl)phenyl]-2,3-dihydro-1,4-benzodioxine-3-carboxamide573946-06-2C25H22N2O6
- Methyl 4-[[(E)-2-[3-acetyl-5-[(4-methylbenzoyl)amino]-6-oxopyran-2-yl]ethenyl]amino]benzoate338392-07-7C25H22N2O6
- 3-(3,5-Dimethoxybenzamido)-N-(4-methoxyphenyl)benzofuran-2-carboxamide887871-66-1C25H22N2O6
- N-(2,5-Dimethoxyphenyl)-3-(3-methoxybenzamido)benzofuran-2-carboxamide888465-26-7C25H22N2O6
- N-(2,5-Dimethoxyphenyl)-3-(4-methoxybenzamido)benzofuran-2-carboxamide888465-31-4C25H22N2O6
- N-(3,4-Dimethoxyphenyl)-3-(2-methoxybenzamido)-1-benzofuran-2-carboxamide888448-93-9C25H22N2O6
- N-(3,4-Dimethoxyphenyl)-3-(3-methoxybenzamido)benzofuran-2-carboxamide888449-00-1C25H22N2O6
- N-(3,4-Dimethoxyphenyl)-3-(4-methoxybenzamido)benzofuran-2-carboxamide888449-07-8C25H22N2O6
- N-(3,4-Dimethoxyphenyl)-3-(2-phenoxyacetamido)benzofuran-2-carboxamide888452-83-3C25H22N2O6
- (2E)-N-{10-Oxo-2-oxa-9-azatricyclo[9.4.0.0^{3,8}]pentadeca-1(11),3(8),4,6,12,14-hexaen-13-yl}-3-(3,4,5-trimethoxyphenyl)prop-2-enamide1207061-49-1C25H22N2O6
- Fmoc-4-nitro-L-homophenylalanine205182-66-7C25H22N2O6
- 3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-[6-(methoxycarbonyl)pyridin-3-yl]propanoic acid2249380-32-1C25H22N2O6
- Fmoc-4-nitro-D-homophenylalanine2349606-35-3C25H22N2O6
- (4E)-5-(4-Hydroxy-3-methoxyphenyl)-4-[hydroxy-(3-methoxyphenyl)methylidene]-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione609312-71-2C25H22N2O6
- 3-(2,4-Dimethoxybenzamido)-N-(3-methoxyphenyl)benzofuran-2-carboxamide862830-51-1C25H22N2O6
- Ethyl 4-({(2Z)-3-[(furan-2-ylmethyl)carbamoyl]-8-methoxy-2H-chromen-2-ylidene}amino)benzoate1327172-34-8C25H22N2O6
- (S)-2-(Fmoc-amino)-4-(3-nitrophenyl)butanoic acid2350002-45-6C25H22N2O6
- 3-Methyl 5-(3-phenyl-2-propyn-1-yl) 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylate99522-80-2C25H22N2O6
- 1,1'-[Pentane-1,4-diylbis(oxy-4,1-phenylene)]di(1H-pyrrole-2,5-dione)147299-72-7C25H22N2O6
- 4-[3-[2-[(2-Methoxy-2-oxoacetyl)phenylamino]-3-pyridinyl]-3-oxopropyl]benzoic acid methyl ester1392482-83-5C25H22N2O6
- Methyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-3-(2-nitrophenyl)propanoate1820580-19-5C25H22N2O6
- Methyl 7-hydroxy-1-(3-pyridinyl)-4-(3,4,5-trimethoxyphenyl)-3-isoquinolinecarboxylate299169-14-5C25H22N2O6
- 1-[N-Methyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)furan-2-amido]cyclopropane-1-carboxylic acid2172476-43-4C25H22N2O6
- Methyl (3R)-3-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-3-(3-nitrophenyl)propanoate1820574-61-5C25H22N2O6
- Fmoc-4-nitro-DL-homophenylalanine273221-89-9C25H22N2O6
- 2-{[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)furan-2-yl]formamido}pent-4-enoic acid2171740-58-0C25H22N2O6
- 1-[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)furan-2-carbonyl]-3-methylazetidine-3-carboxylic acid2171804-26-3C25H22N2O6
- 3-[(2R)-2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-4-hydroxybenzoic acid2171162-02-8C25H22N2O6
- 5-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-2-hydroxybenzoic acid2171701-45-2C25H22N2O6
- 2-[({4-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]phenyl}formamido)oxy]acetic acid2172313-05-0C25H22N2O6
- 2-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)acetamido]-5-methoxybenzoic acid2172106-63-5C25H22N2O6
- 2-{3-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)acetamido]phenoxy}acetic acid2172197-17-8C25H22N2O6
- 2-({1-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)phenyl]-N-methylformamido}oxy)acetic acid2172512-06-8C25H22N2O6
- 3-[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-4-hydroxybenzoic acid2172512-62-6C25H22N2O6
- (2S)-3-{[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}-2-hydroxypropanoic acid2171263-70-8C25H22N2O6
- 3-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-4-hydroxybenzoic acid2171690-53-0C25H22N2O6
- 3-{[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}-2-hydroxypropanoic acid2172199-77-6C25H22N2O6
- 1-{5-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]furan-2-carbonyl}azetidine-3-carboxylic acid2172317-76-7C25H22N2O6
- 1-({[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)furan-2-yl]formamido}methyl)cyclopropane-1-carboxylic acid2171947-14-9C25H22N2O6
- (2S)-2-{[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}-3-hydroxypropanoic acid2171251-45-7C25H22N2O6
- 2-{[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxyphenyl]formamido}acetic acid2172198-29-5C25H22N2O6
- 2-{[(2R)-2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2-phenylacetamido]oxy}acetic acid2171145-59-6C25H22N2O6
- 2-({2-[4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)phenyl]acetamido}oxy)acetic acid2172102-45-1C25H22N2O6
- (2S)-3-{[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}-2-hydroxypropanoic acid2171289-31-7C25H22N2O6
- 2-({[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-4-methylphenyl]formamido}oxy)acetic acid2172512-59-1C25H22N2O6
- 2-{4-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)acetamido]phenoxy}acetic acid2172041-73-3C25H22N2O6
- 3-{[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}-2-hydroxypropanoic acid2171874-34-1C25H22N2O6
- 3-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)acetamido]-4-methoxybenzoic acid2171875-02-6C25H22N2O6
- 2-({1-[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)phenyl]-N-methylformamido}oxy)acetic acid2172178-17-3C25H22N2O6
- 4-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-2-hydroxybenzoic acid2171709-77-4C25H22N2O6
- 2-[(2R)-2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-5-hydroxybenzoic acid2171216-99-0C25H22N2O6
- 2-({[4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-methylphenyl]formamido}oxy)acetic acid2171899-17-3C25H22N2O6
- 2-({2-[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)phenyl]acetamido}oxy)acetic acid2172104-17-3C25H22N2O6
- 2-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)acetamido]-4-methoxybenzoic acid2172463-98-6C25H22N2O6
- 2-{1-[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)furan-2-carbonyl]azetidin-3-yl}acetic acid2171834-31-2C25H22N2O6
- 2-Cyclopropyl-2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)furan-2-yl]formamido}acetic acid2171629-50-6C25H22N2O6
- 3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-[(4-hydroxyphenyl)carbamoyl]propanoic acid2171673-63-3C25H22N2O6
- 2-{2-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)acetamido]phenoxy}acetic acid2172220-62-9C25H22N2O6
- 1-{5-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]furan-2-carbonyl}azetidine-2-carboxylic acid2171516-03-1C25H22N2O6
- 3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-[(3-hydroxyphenyl)carbamoyl]propanoic acid2171668-51-0C25H22N2O6
- 4-[(2R)-2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-2-hydroxybenzoic acid2171233-67-1C25H22N2O6
- 3-{[4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}-2-hydroxypropanoic acid2172187-32-3C25H22N2O6
- 1-{5-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]furan-2-amido}cyclopropane-1-carboxylic acid2172188-33-7C25H22N2O6
- 5-({[1-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)cyclopropyl]formamido}methyl)furan-2-carboxylic acid2171845-71-7C25H22N2O6
- (2S)-3-{[4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}-2-hydroxypropanoic acid2171240-50-7C25H22N2O6
- 2-{[4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2-methoxyphenyl]formamido}acetic acid2172114-85-9C25H22N2O6
Frequently asked questions
What is the molar mass of C25H22N2O6?
The molar mass of C25H22N2O6 is 446.46 g/mol, calculated from standard atomic weights for 25 carbon atoms, 22 hydrogen atoms, 2 nitrogen atoms and 6 oxygen atoms. The monoisotopic mass is 446.1478 Da.
How many compounds have the formula C25H22N2O6?
CompoundList lists 155 compounds with the molecular formula C25H22N2O6, including 2-[3-(3,4-Dimethoxyphenyl)-2,4-dioxo-1-quinazolinyl]acetic acid (phenylmethyl) ester, (R)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(4-nitrophenyl)butanoic acid, Carbamic acid, (methylenedi-4,1-phenylene)bis-, bis(2-furanylmethyl) ester. 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 C25H22N2O6?
C25H22N2O6 has a degree of unsaturation of 16. 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.