Molecular formula
C25H27N3O3S
93 compounds have this formula on CompoundList.
- Molar mass
- 449.57g/mol
- Monoisotopic mass
- 457.2275Da
- Atoms
- 59
- Elements
- 5
- Rings plus double bonds
- 14
The formula C25H27N3O3S describes a molecule made of 25 carbon atoms, 27 hydrogen atoms, 3 nitrogen atoms, 3 oxygen atoms and 1 sulfur atom. 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 × 2566.79%12.011 × 25 = 300.275 g/mol
- H Hydrogen × 276.05%1.008 × 27 = 27.216 g/mol
- N Nitrogen × 39.35%14.007 × 3 = 42.021 g/mol
- O Oxygen × 310.68%15.999 × 3 = 47.997 g/mol
- S Sulfur × 17.13%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C25H27N3O3S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 93 of 93 compounds
![N-[2,6-Bis(1-methylethyl)phenyl]-N'-[4-[(4-nitrophenyl)thio]phenyl]urea chemical structure, C25H27N3O3S, CAS 228544-65-8](/s/XFFITGBWVLQNCD-UHFFFAOYSA-N.svg)
N-[2,6-Bis(1-methylethyl)phenyl]-N'-[4-[(4-nitrophenyl)thio]phenyl]urea
CAS 228544-65-8C25H27N3O3S
![N-Benzyl-N-[2-(4-phenylpiperazine-1-carbonyl)phenyl]methanesulfonamide chemical structure, C25H27N3O3S, CAS 357324-94-8](/s/LKTMUQPSJMLHHP-UHFFFAOYSA-N.svg)
N-Benzyl-N-[2-(4-phenylpiperazine-1-carbonyl)phenyl]methanesulfonamide
CAS 357324-94-8C25H27N3O3S
![N-{4-[(4-Methyl-1-piperazinyl)carbonyl]benzyl}-N-phenylbenzenesulfonamide chemical structure, C25H27N3O3S, CAS 640718-58-7](/s/XEUFRASSRWPSAQ-UHFFFAOYSA-N.svg)
N-{4-[(4-Methyl-1-piperazinyl)carbonyl]benzyl}-N-phenylbenzenesulfonamide
CAS 640718-58-7C25H27N3O3S
![N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-2-({3-phenyl-1,4-diazaspiro[4.6]undeca-1,3-dien-2-YL}sulfanyl)acetamide chemical structure, C25H27N3O3S, CAS 899911-56-9](/s/IJAZIJXQCWJPQD-UHFFFAOYSA-N.svg)
N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-2-({3-phenyl-1,4-diazaspiro[4.6]undeca-1,3-dien-2-YL}sulfanyl)acetamide
CAS 899911-56-9C25H27N3O3S
![N-{2-[4-(Methylsulfonyl)-1-piperazinyl]phenyl}-2,2-diphenylacetamide chemical structure, C25H27N3O3S, CAS 712291-74-2](/s/HPMDIEDDAPOEQN-UHFFFAOYSA-N.svg)
N-{2-[4-(Methylsulfonyl)-1-piperazinyl]phenyl}-2,2-diphenylacetamide
CAS 712291-74-2C25H27N3O3S
![N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-2-{[3-(4-methylphenyl)-1,4-diazaspiro[4.5]deca-1,3-dien-2-yl]sulfanyl}acetamide chemical structure, C25H27N3O3S, CAS 899911-42-3](/s/IFFQLQGGMHZFMF-UHFFFAOYSA-N.svg)
N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-2-{[3-(4-methylphenyl)-1,4-diazaspiro[4.5]deca-1,3-dien-2-yl]sulfanyl}acetamide
CAS 899911-42-3C25H27N3O3S
N-Ethyl-N-phenyl-4-(4-phenylpiperazine-1-carbonyl)benzenesulfonamide
CAS 784198-22-7C25H27N3O3S
N-(4-Acetylphenyl)-2-((1-(2-oxo-2-(piperidin-1-yl)ethyl)-1H-indol-3-yl)thio)acetamide
CAS 878053-20-4C25H27N3O3S
![N-(1,3-Benzothiazol-2-yl)-2'-(2-methoxyethyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxamide chemical structure, C25H27N3O3S, CAS 1180027-18-2](/s/BHVJVYWPLPQDFK-UHFFFAOYSA-N.svg)
N-(1,3-Benzothiazol-2-yl)-2'-(2-methoxyethyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxamide
CAS 1180027-18-2C25H27N3O3S
![2-({9-Ethoxy-2-phenyl-5H-chromeno[2,3-D]pyrimidin-4-YL}sulfanyl)-N,N-diethylacetamide chemical structure, C25H27N3O3S, CAS 866589-00-6](/s/BHLHNAOAUGPWKC-UHFFFAOYSA-N.svg)
2-({9-Ethoxy-2-phenyl-5H-chromeno[2,3-D]pyrimidin-4-YL}sulfanyl)-N,N-diethylacetamide
CAS 866589-00-6C25H27N3O3S
Hbv-IN-23
CAS 2413649-89-3C25H27N3O3S
![{2-[4-(Dimethylamino)phenyl]-3-[(4-methylphenyl)sulfonyl]imidazolidin-1-yl}(phenyl)methanone chemical structure, C25H27N3O3S, CAS 303172-58-9](/s/BKWMDOOEJAGBPS-UHFFFAOYSA-N.svg)
{2-[4-(Dimethylamino)phenyl]-3-[(4-methylphenyl)sulfonyl]imidazolidin-1-yl}(phenyl)methanone
CAS 303172-58-9C25H27N3O3S
(4-((4-Cyclopropylthiazol-2-yl)methoxy)phenyl)(4-(2-methoxyphenyl)piperazin-1-yl)methanone
CAS 1257548-92-7C25H27N3O3S
![3-Amino-7,7-dimethyl-5-oxo-N-[(oxolan-2-yl)methyl]-4-phenyl-5H,6H,7H,8H-thieno[2,3-b]quinoline-2-carboxamide chemical structure, C25H27N3O3S, CAS 690644-19-0](/s/AFLVXEALGURYPO-UHFFFAOYSA-N.svg)
3-Amino-7,7-dimethyl-5-oxo-N-[(oxolan-2-yl)methyl]-4-phenyl-5H,6H,7H,8H-thieno[2,3-b]quinoline-2-carboxamide
CAS 690644-19-0C25H27N3O3S
N1-(2-(3,4-dihydroisoquinolin-2(1H)-yl)-2-(thiophen-3-yl)ethyl)-N2-(2-methoxy-5-methylphenyl)oxalamide
CAS 954696-75-4C25H27N3O3S
N1-(2-(3,4-dihydroisoquinolin-2(1H)-yl)-2-(thiophen-3-yl)ethyl)-N2-(4-methoxybenzyl)oxalamide
CAS 954618-45-2C25H27N3O3S
2(1H)-Quinolinone, 7-(4-(4-(1-oxidobenzo(b)thien-4-yl)-1-piperazinyl)butoxy)-
CAS 1191900-51-2C25H27N3O3S
Brexpiprazole N-oxide
CAS 1191900-58-9C25H27N3O3S
![2-({3-Cyano-6-oxo-4-[4-(propan-2-yl)phenyl]-1,4,5,6-tetrahydropyridin-2-yl}sulfanyl)-N-(4-ethoxyphenyl)acetamide chemical structure, C25H27N3O3S, CAS 369393-35-1](/s/KURXMEVVMJABOR-UHFFFAOYSA-N.svg)
2-({3-Cyano-6-oxo-4-[4-(propan-2-yl)phenyl]-1,4,5,6-tetrahydropyridin-2-yl}sulfanyl)-N-(4-ethoxyphenyl)acetamide
CAS 369393-35-1C25H27N3O3S
Brexpiprazole S-oxide-d8
CAS 2748605-29-8C25H27N3O3S
![3,4-Dimethyl-N-(4-{[2-(pyridin-3-yl)piperidin-1-yl]sulfonyl}phenyl)benzamide chemical structure, C25H27N3O3S, CAS 393834-69-0](/s/VBELTBXPYXQPOG-UHFFFAOYSA-N.svg)
3,4-Dimethyl-N-(4-{[2-(pyridin-3-yl)piperidin-1-yl]sulfonyl}phenyl)benzamide
CAS 393834-69-0C25H27N3O3S
N-(4-((4-(Diphenylmethyl)piperazinyl)sulfonyl)phenyl)ethanamide
CAS 528531-45-5C25H27N3O3S
4-(3,4-Dimethylbenzenesulfonyl)-N,N-diphenylpiperazine-1-carboxamide
CAS 691388-13-3C25H27N3O3S
4-Benzhydryl-N-(4-methylphenyl)sulfonylpiperazine-1-carboxamide
CAS 681801-56-9C25H27N3O3S
- 2-[[7,7-Dimethyl-2-(4-methylphenyl)-5,8-dihydropyrano[4,3-d]pyrimidin-4-yl]sulfanyl]-N-(2-methoxyphenyl)acetamide573941-89-6C25H27N3O3S
- 3-[2-(Cyclohexen-1-yl)ethyl]-N-[(2-methoxyphenyl)methyl]-4-oxo-2-sulfanylidene-1H-quinazoline-7-carboxamide403728-51-8C25H27N3O3S
- N1-(3-(methylthio)phenyl)-N2-(2-morpholino-2-(naphthalen-1-yl)ethyl)oxalamide941996-68-5C25H27N3O3S
- 1-Benzhydryl-3-(1-(ethylsulfonyl)-1,2,3,4-tetrahydroquinolin-6-yl)urea1203045-14-0C25H27N3O3S
- 2-(4-Ethylphenoxy)-N-[4-[4-(thiophene-2-carbonyl)piperazin-1-yl]phenyl]acetamide674350-41-5C25H27N3O3S
- 4-((2,4-Dimethylphenyl)sulfonyl)-N,N-diphenylpiperazine-1-carboxamide501104-63-8C25H27N3O3S
- 2-[(3-Butyl-4-oxo-3,4-dihydro[1]benzofuro[3,2-d]pyrimidin-2-yl)sulfanyl]-N-[4-(propan-2-yl)phenyl]acetamide899754-30-4C25H27N3O3S
- 2-[(3-Butyl-4-oxo-3,4-dihydro[1]benzofuro[3,2-d]pyrimidin-2-yl)sulfanyl]-N-(2,4,6-trimethylphenyl)acetamide899982-20-8C25H27N3O3S
- N-(2,5-Dimethylphenyl)-2-{[3-(3-methylbutyl)-4-oxo-3,4-dihydro[1]benzofuro[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide899755-38-5C25H27N3O3S
- N-(2,3-Dimethylphenyl)-2-{[3-(3-methylbutyl)-4-oxo-3,4-dihydro[1]benzofuro[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide899755-42-1C25H27N3O3S
- N-(2,4-Dimethylphenyl)-2-{[3-(3-methylbutyl)-4-oxo-3,4-dihydro[1]benzofuro[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide900003-26-1C25H27N3O3S
- N-(2,6-Dimethylphenyl)-2-{[3-(3-methylbutyl)-4-oxo-3,4-dihydro[1]benzofuro[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide899755-44-3C25H27N3O3S
- N-(2-Ethylphenyl)-2-{[3-(3-methylbutyl)-4-oxo-3,4-dihydro[1]benzofuro[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide900003-35-2C25H27N3O3S
- N-(3-Ethylphenyl)-2-{[3-(3-methylbutyl)-4-oxo-3,4-dihydro[1]benzofuro[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide899755-50-1C25H27N3O3S
- N-(4-Ethylphenyl)-2-{[3-(3-methylbutyl)-4-oxo-3,4-dihydro[1]benzofuro[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide900003-38-5C25H27N3O3S
- 2-{[3-(3-Methylbutyl)-4-oxo-3,4-dihydro[1]benzofuro[3,2-d]pyrimidin-2-yl]sulfanyl}-N-(2-phenylethyl)acetamide899961-31-0C25H27N3O3S
- N-(4-Methylbenzyl)-2-{[3-(3-methylbutyl)-4-oxo-3,4-dihydro[1]benzofuro[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide900003-56-7C25H27N3O3S
- N-(Naphthalen-1-yl)-2-((2-oxo-1-((tetrahydrofuran-2-yl)methyl)-1,2,5,6,7,8-hexahydroquinazolin-4-yl)thio)acetamide899993-63-6C25H27N3O3S
- 1-(3,4-Dihydroquinolin-1(2H)-yl)-2-((1-(2-morpholino-2-oxoethyl)-1H-indol-3-yl)thio)ethanone878054-22-9C25H27N3O3S
- 7-(4-(4-(7-Hydroxybenzothiophen-4-yl)piperazin-1-yl)butoxy)-1H-quinolin-2-one1191900-50-1C25H27N3O3S
- 1-Benzyl-4-[6-(3,4-dimethylbenzenesulfonyl)pyridine-3-carbonyl]piperazine1286698-03-0C25H27N3O3S
- 5-Amino-4-[4-(3,4-dimethoxyphenyl)-1,3-thiazol-2-yl]-1-(1-methyl-3-phenylpropyl)-1,2-dihydro-3H-pyrrol-3-one929827-09-8C25H27N3O3S
- 2-[(4-Isopropoxybenzoyl)amino]-N-(3-pyridinylmethyl)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide617681-07-9C25H27N3O3S
- N-[4-(4-Benzhydrylpiperazine-1-carbonyl)phenyl]methanesulfonamide831187-92-9C25H27N3O3S
- 2-{[7,7-Dimethyl-2-(3-methylphenyl)-7,8-dihydro-5H-pyrano[4,3-d]pyrimidin-4-yl]sulfanyl}-N-(2-methoxyphenyl)acetamide900290-19-9C25H27N3O3S
- 4-Methoxy-N-[2,5,6-trimethyl-1-(3-methylbenzyl)-1H-1,3-benzimidazol-4-yl]benzenesulfonamide338964-16-2C25H27N3O3S
- N1-(2-(3,4-dihydroisoquinolin-2(1H)-yl)-2-(thiophen-2-yl)ethyl)-N2-(4-methoxybenzyl)oxalamide898452-68-1C25H27N3O3S
- (2E)-3-[(4-Butoxyphenyl)amino]-2-[4-(4-ethoxy-3-methoxyphenyl)-1,3-thiazol-2-yl]prop-2-enenitrile941933-69-3C25H27N3O3S
- N-(4-(Benzyloxy)benzyl)-7-ethyl-8-methyl-6-oxo-2,3,4,6-tetrahydropyrimido[2,1-b][1,3]thiazine-3-carboxamide1421445-78-4C25H27N3O3S
- 1-[1-(3,4-Dimethoxyphenyl)-2-methylpropyl]-5-imino-4-(4-phenyl-1,3-thiazol-2-yl)-2,5-dihydro-1H-pyrrol-3-ol1676097-39-4C25H27N3O3S
- 4-Amino-2-hydroxybenzoic acid-10-[2-(pyrrolidin-1-yl)ethyl]-10H-phenothiazine(1:1)5327-56-0C25H27N3O3S
- N,N-Diethyl-2-{[2-(4-methoxyphenyl)-7-methyl-5H-chromeno[2,3-D]pyrimidin-4-yl]sulfanyl}acetamide866340-82-1C25H27N3O3S
- N-[2-(4-Benzylpiperazin-1-yl)-2-oxoethyl]-N-phenylbenzenesulfonamide428461-48-7C25H27N3O3S
- N-(2-Methylphenyl)-N-[2-oxo-2-(4-phenylpiperazin-1-yl)ethyl]benzenesulfonamide6471-42-7C25H27N3O3S
- 1-(Furan-2-ylmethyl)-1-(2-(5-methoxy-2-methyl-1H-indol-3-yl)ethyl)-3-(2-methoxyphenyl)thiourea851937-30-9C25H27N3O3S
- 3-(2,5-Dimethoxyphenyl)-1-(furan-2-ylmethyl)-1-(2-(2-methyl-1H-indol-3-yl)ethyl)thiourea851971-70-5C25H27N3O3S
- 1-(Furan-2-ylmethyl)-1-(2-(5-methoxy-2-methyl-1H-indol-3-yl)ethyl)-3-(4-methoxyphenyl)thiourea851937-32-1C25H27N3O3S
- 1-(Furan-2-ylmethyl)-1-(2-(5-methoxy-2-methyl-1H-indol-3-yl)ethyl)-3-(3-methoxyphenyl)thiourea851937-31-0C25H27N3O3S
- 1-(3-Methoxyphenyl)-3-[[3-[(4-propan-2-ylphenoxy)methyl]benzoyl]amino]thiourea828297-08-1C25H27N3O3S
- N1-(2-(indolin-1-yl)-2-(thiophen-2-yl)ethyl)-N2-(2-methoxyphenethyl)oxalamide898407-57-3C25H27N3O3S
- N1-(2-(indolin-1-yl)-2-(thiophen-2-yl)ethyl)-N2-(4-methoxyphenethyl)oxalamide898407-61-9C25H27N3O3S
- N'-[(3-Methoxyphenyl)methyl]-N-[2-(1,2,3,4-tetrahydroisoquinolin-2-yl)-2-(thiophen-2-yl)ethyl]ethanediamide898424-68-5C25H27N3O3S
- N1-(2-(3,4-dihydroisoquinolin-2(1H)-yl)-2-(thiophen-2-yl)ethyl)-N2-(2-methoxy-5-methylphenyl)oxalamide898452-77-2C25H27N3O3S
- N1-(2-(3,4-dihydroisoquinolin-2(1H)-yl)-2-(thiophen-2-yl)ethyl)-N2-(2-ethoxyphenyl)oxalamide898424-90-3C25H27N3O3S
- 2-(1-(2-(Azepan-1-yl)-2-oxoethyl)-1H-indol-3-yl)-N-(2-(methylthio)phenyl)-2-oxoacetamide894003-37-3C25H27N3O3S
- N-(2-((4-Phenylpiperazin-1-yl)sulfonyl)ethyl)-[1,1'-biphenyl]-4-carboxamide897621-33-9C25H27N3O3S
- N1-(2-(3,4-dihydroisoquinolin-2(1H)-yl)-2-(thiophen-2-yl)ethyl)-N2-(4-ethoxyphenyl)oxalamide898424-84-5C25H27N3O3S
- N-(3,4-Dimethylphenyl)-2-((3-isopentyl-4-oxo-3,4-dihydrobenzofuro[3,2-d]pyrimidin-2-yl)thio)acetamide900003-20-5C25H27N3O3S
- Ethyl 4-[2-({3-phenyl-1,4-diazaspiro[4.5]deca-1,3-dien-2-YL}sulfanyl)acetamido]benzoate899935-22-9C25H27N3O3S
- N-{2-[4-(Aminosulfonyl)phenyl]ethyl}-1-(diphenylmethyl)-3-azetidinecarboxamide1081129-66-9C25H27N3O3S
- 1-(4-Butoxyphenyl)-3-(1-(thiophene-2-carbonyl)-1,2,3,4-tetrahydroquinolin-6-yl)urea1203257-74-2C25H27N3O3S
- 3-Butyl-2-(((2-(4-ethoxyphenyl)-5-methyloxazol-4-yl)methyl)thio)quinazolin-4(3H)-one1114660-96-6C25H27N3O3S
- 2-(((2-(4-Isopropoxyphenyl)-5-methyloxazol-4-yl)methyl)thio)-3-isopropylquinazolin-4(3H)-one1114827-40-5C25H27N3O3S
- 2-(((2-(4-Ethoxyphenyl)-5-methyloxazol-4-yl)methyl)thio)-3-isobutylquinazolin-4(3H)-one1114827-42-7C25H27N3O3S
- 3-Isopentyl-2-(((2-(2-methoxyphenyl)-5-methyloxazol-4-yl)methyl)thio)quinazolin-4(3H)-one1114653-61-0C25H27N3O3S
- 3-Isopentyl-2-(((2-(4-methoxyphenyl)-5-methyloxazol-4-yl)methyl)thio)quinazolin-4(3H)-one1114827-45-0C25H27N3O3S
- 5-(4-(6,7-Dihydrothieno[3,2-c]pyridin-5(4H)-yl)piperidine-1-carbonyl)-4-methoxy-1-phenylpyridin-2(1H)-one1903133-31-2C25H27N3O3S
- Brexpiprazole impurity 572368233-78-5C25H27N3O3S
- (5Z)-5-[4-(Hexyloxy)-3-methoxybenzylidene]-2-(2-methylphenyl)[1,3]thiazolo[3,2-b][1,2,4]triazol-6(5H)-one577984-79-3C25H27N3O3S
- (5Z)-5-[4-(Heptyloxy)-3-methoxybenzylidene]-2-phenyl[1,3]thiazolo[3,2-b][1,2,4]triazol-6(5H)-one797766-65-5C25H27N3O3S
- 3-Propoxy-N-[4-[4-(thiophene-2-carbonyl)piperazin-1-yl]phenyl]benzamide838884-38-1C25H27N3O3S
- 2-Methyl-N-{4-[(1E)-1-{2-[(2,4,6-trimethylphenyl)sulfonyl]hydrazinylidene}ethyl]phenyl}benzamide727373-89-9C25H27N3O3S
- N-{3-[Methyl(phenyl)amino]propyl}-4-(2-phenylethenesulfonamido)benzamide1095478-97-9C25H27N3O3S
- [Benzyl(phenyl)carbamoyl]methyl 3-[4,6-dimethyl-2-(methylsulfanyl)pyrimidin-5-yl]propanoate1290309-41-9C25H27N3O3S
- N-({2-[(Dimethylamino)methyl]phenyl}methyl)-4-(2-phenylethenesulfonamido)benzamide1010044-72-0C25H27N3O3S
- N-Benzyl-N-[4-(4-methyl-piperazine-1-carbonyl)-phenyl]-benzenesulfonamide1255715-95-7C25H27N3O3S
- N-(4-Ethylphenyl)-2,3-dihydro-I+/--methyl-3-oxo-6-(2-propyl-4-thiazolyl)-4H-1,4-benzoxazine-4-acetamide1219426-64-8C25H27N3O3S
- 7-[4-(4-Benzo[b]thien-4-yl-1-piperazinyl)butoxy]-3-hydroxy-2(1H)-quinolinone1191900-55-6C25H27N3O3S
- 7-[4-(4-Benzo[b]thien-4-yl-1-piperazinyl)butoxy]-4-hydroxy-2(1H)-quinolinone1191900-57-8C25H27N3O3S
Frequently asked questions
What is the molar mass of C25H27N3O3S?
The molar mass of C25H27N3O3S is 449.57 g/mol, calculated from standard atomic weights for 25 carbon atoms, 27 hydrogen atoms, 3 nitrogen atoms, 3 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 457.2275 Da.
How many compounds have the formula C25H27N3O3S?
CompoundList lists 93 compounds with the molecular formula C25H27N3O3S, including N-[2,6-Bis(1-methylethyl)phenyl]-N'-[4-[(4-nitrophenyl)thio]phenyl]urea, N-Benzyl-N-[2-(4-phenylpiperazine-1-carbonyl)phenyl]methanesulfonamide, N-{4-[(4-Methyl-1-piperazinyl)carbonyl]benzyl}-N-phenylbenzenesulfonamide. 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 C25H27N3O3S?
C25H27N3O3S has a degree of unsaturation of 14. 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.