Exact Mass: 448.1199
Exact Mass Matches: 448.1199
Found 79 metabolites which its exact mass value is equals to given mass value 448.1199,
within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error
0.001 dalton.
Temocaprilat
(2S)-2-{[(2S,6R)-4-(carboxymethyl)-5-oxo-2-(thiophen-2-yl)-1,4-thiazepan-6-yl]amino}-4-phenylbutanoic acid
Temocaprilat belongs to the class of organic compounds known as phenylpropylamines. These are compounds containing a phenylpropylamine moiety, which consists of a phenyl group substituted at the third carbon by an propan-1-amine.
Temocaprilat
Temocaprilat
C78274 - Agent Affecting Cardiovascular System > C270 - Antihypertensive Agent C471 - Enzyme Inhibitor > C783 - Protease Inhibitor > C247 - ACE Inhibitor
4-Hydroxy-5-(3',4',5'-trihydroxyphenyl)-valeric acid-O-methyl-O-glucuronide
(2S,3S,4S,5R,6S)-3,4,5-trihydroxy-6-({[4-hydroxy-5-(3,4,5-trihydroxyphenyl)pentanoyl]oxy}methoxy)oxane-2-carboxylic acid
4-Hydroxy-5-(3,4,5-trihydroxyphenyl)-valeric acid-O-methyl-O-glucuronide is a conjugate of 4-hydroxy-5-(3,4,5-trihydroxyphenyl)-valeric acid-O-methyl and glucuronide. A glucuronide, also known as glucuronoside, is any substance produced by linking glucuronic acid to another substance via a glycosidic bond. The glucuronides belong to the glycosides. (Wikipedia)
8-Chlorodiltiazem
3-Acetoxy-8-chloro-5-(2-(dimethylamino)ethyl)-2,3-dihydro-2-(4-methoxyphenyl)-1,5-benzothiazepin-4-(5H)-one maleate
D006401 - Hematologic Agents > D010975 - Platelet Aggregation Inhibitors D002317 - Cardiovascular Agents > D002121 - Calcium Channel Blockers D002317 - Cardiovascular Agents > D000959 - Antihypertensive Agents D000077264 - Calcium-Regulating Hormones and Agents D049990 - Membrane Transport Modulators
(2S)-2-[[(2S,6R)-4-(Carboxymethyl)-5-oxo-2-(2-thienyl)-1,4-thiazepan-6-yl]amino]-4-phenyl-butanoic acid
(2S)-2-[[(2S,6R)-4-(Carboxymethyl)-5-oxo-2-(2-thienyl)-1,4-thiazepan-6-yl]amino]-4-phenyl-butanoic acid
5-(2-O-beta-D-Apiofuranosyl-beta-D-glucopyranosyl)oxy-2-hydroxybenzoic acid
5-(2-O-beta-D-Apiofuranosyl-beta-D-glucopyranosyl)oxy-2-hydroxybenzoic acid
2-[[[4-[[[4-[(1,3-Benzodioxole-5-yl)methyl]-2,3-dihydro-1-methyl-1H-imidazole]-2-ylidene]amino]-2,5-dihydro-5-oxo-1-methyl-1H-imidazole]-2-ylidene]amino]ethanesulfonic acid
2-[[[4-[[[4-[(1,3-Benzodioxole-5-yl)methyl]-2,3-dihydro-1-methyl-1H-imidazole]-2-ylidene]amino]-2,5-dihydro-5-oxo-1-methyl-1H-imidazole]-2-ylidene]amino]ethanesulfonic acid
Cys Cys His Ser
(2S)-2-[(2S)-2-[(2R)-2-[(2R)-2-amino-3-sulfanylpropanamido]-3-sulfanylpropanamido]-3-(1H-imidazol-4-yl)propanamido]-3-hydroxypropanoic acid
Cys Cys Ser His
(2S)-2-[(2S)-2-[(2R)-2-[(2R)-2-amino-3-sulfanylpropanamido]-3-sulfanylpropanamido]-3-hydroxypropanamido]-3-(1H-imidazol-4-yl)propanoic acid
Cys Asp Asp Pro
(2S)-1-[(2S)-2-[(2S)-2-[(2R)-2-amino-3-sulfanylpropanamido]-3-carboxypropanamido]-3-carboxypropanoyl]pyrrolidine-2-carboxylic acid
Cys Asp Pro Asp
(2S)-2-{[(2S)-1-[(2S)-2-[(2R)-2-amino-3-sulfanylpropanamido]-3-carboxypropanoyl]pyrrolidin-2-yl]formamido}butanedioic acid
Cys His Cys Ser
(2S)-2-[(2R)-2-[(2S)-2-[(2R)-2-amino-3-sulfanylpropanamido]-3-(1H-imidazol-4-yl)propanamido]-3-sulfanylpropanamido]-3-hydroxypropanoic acid
Cys His Ser Cys
(2R)-2-[(2S)-2-[(2S)-2-[(2R)-2-amino-3-sulfanylpropanamido]-3-(1H-imidazol-4-yl)propanamido]-3-hydroxypropanamido]-3-sulfanylpropanoic acid
Cys Pro Asp Asp
(2S)-2-[(2S)-2-{[(2S)-1-[(2R)-2-amino-3-sulfanylpropanoyl]pyrrolidin-2-yl]formamido}-3-carboxypropanamido]butanedioic acid
Cys Ser Cys His
(2S)-2-[(2R)-2-[(2S)-2-[(2R)-2-amino-3-sulfanylpropanamido]-3-hydroxypropanamido]-3-sulfanylpropanamido]-3-(1H-imidazol-4-yl)propanoic acid
Cys Ser His Cys
(2R)-2-[(2S)-2-[(2S)-2-[(2R)-2-amino-3-sulfanylpropanamido]-3-hydroxypropanamido]-3-(1H-imidazol-4-yl)propanamido]-3-sulfanylpropanoic acid
Asp Cys Asp Pro
(2S)-1-[(2S)-2-[(2R)-2-[(2S)-2-amino-3-carboxypropanamido]-3-sulfanylpropanamido]-3-carboxypropanoyl]pyrrolidine-2-carboxylic acid
Asp Cys Pro Asp
(2S)-2-{[(2S)-1-[(2R)-2-[(2S)-2-amino-3-carboxypropanamido]-3-sulfanylpropanoyl]pyrrolidin-2-yl]formamido}butanedioic acid
Asp Asp Cys Pro
(2S)-1-[(2R)-2-[(2S)-2-[(2S)-2-amino-3-carboxypropanamido]-3-carboxypropanamido]-3-sulfanylpropanoyl]pyrrolidine-2-carboxylic acid
Asp Asp Pro Cys
(3S)-3-[(2S)-2-amino-3-carboxypropanamido]-4-[(2S)-2-{[(1R)-1-carboxy-2-sulfanylethyl]carbamoyl}pyrrolidin-1-yl]-4-oxobutanoic acid
Asp Pro Cys Asp
(2S)-2-[(2R)-2-{[(2S)-1-[(2S)-2-amino-3-carboxypropanoyl]pyrrolidin-2-yl]formamido}-3-sulfanylpropanamido]butanedioic acid
Asp Pro Asp Cys
(3S)-3-{[(2S)-1-[(2S)-2-amino-3-carboxypropanoyl]pyrrolidin-2-yl]formamido}-3-{[(1R)-1-carboxy-2-sulfanylethyl]carbamoyl}propanoic acid
His Cys Cys Ser
(2S)-2-[(2R)-2-[(2R)-2-[(2S)-2-amino-3-(1H-imidazol-4-yl)propanamido]-3-sulfanylpropanamido]-3-sulfanylpropanamido]-3-hydroxypropanoic acid
His Cys Ser Cys
(2R)-2-[(2S)-2-[(2R)-2-[(2S)-2-amino-3-(1H-imidazol-4-yl)propanamido]-3-sulfanylpropanamido]-3-hydroxypropanamido]-3-sulfanylpropanoic acid
His Ser Cys Cys
(2R)-2-[(2R)-2-[(2S)-2-[(2S)-2-amino-3-(1H-imidazol-4-yl)propanamido]-3-hydroxypropanamido]-3-sulfanylpropanamido]-3-sulfanylpropanoic acid
Pro Cys Asp Asp
(2S)-2-[(2S)-3-carboxy-2-[(2R)-2-[(2S)-pyrrolidin-2-ylformamido]-3-sulfanylpropanamido]propanamido]butanedioic acid
Pro Asp Cys Asp
(2S)-2-[(2R)-2-[(2S)-3-carboxy-2-[(2S)-pyrrolidin-2-ylformamido]propanamido]-3-sulfanylpropanamido]butanedioic acid
Pro Asp Asp Cys
(3S)-3-{[(1S)-2-carboxy-1-{[(1R)-1-carboxy-2-sulfanylethyl]carbamoyl}ethyl]carbamoyl}-3-[(2S)-pyrrolidin-2-ylformamido]propanoic acid
Ser Cys Cys His
(2S)-2-[(2R)-2-[(2R)-2-[(2S)-2-amino-3-hydroxypropanamido]-3-sulfanylpropanamido]-3-sulfanylpropanamido]-3-(1H-imidazol-4-yl)propanoic acid
Ser Cys His Cys
(2R)-2-[(2S)-2-[(2R)-2-[(2S)-2-amino-3-hydroxypropanamido]-3-sulfanylpropanamido]-3-(1H-imidazol-4-yl)propanamido]-3-sulfanylpropanoic acid
Ser His Cys Cys
(2R)-2-[(2R)-2-[(2S)-2-[(2S)-2-amino-3-hydroxypropanamido]-3-(1H-imidazol-4-yl)propanamido]-3-sulfanylpropanamido]-3-sulfanylpropanoic acid
Allitinib
Allitinib
C274 - Antineoplastic Agent > C2189 - Signal Transduction Inhibitor > C129824 - Antineoplastic Protein Inhibitor C274 - Antineoplastic Agent > C163758 - Targeted Therapy Agent > C163952 - EGFR-targeting Agent C471 - Enzyme Inhibitor > C1404 - Protein Kinase Inhibitor > C1967 - Tyrosine Kinase Inhibitor C471 - Enzyme Inhibitor > C129825 - Antineoplastic Enzyme Inhibitor
Bis[(5-ethyl-2-methyl-1,3,2-dioxaphosphorinan-5-yl)methyl] methyl phosphonate P,P-dioxide
Bis[(5-ethyl-2-methyl-1,3,2-dioxaphosphorinan-5-yl)methyl] methyl phosphonate P,P-dioxide
Methyl ((S)-1-((S)-2-(4-(4-bromophenyl)-1H-imidazol-2-yl)pyrrolidin-1-yl)-3-Methyl-1-oxobutan-2-yl)carbamate
Methyl ((S)-1-((S)-2-(4-(4-bromophenyl)-1H-imidazol-2-yl)pyrrolidin-1-yl)-3-Methyl-1-oxobutan-2-yl)carbamate
4-[3-[4-Cyano-3-(trifluoromethyl)phenyl]-5,5-dimethyl-2,4-dioxo-1-imidazolidinyl]-2-fluoro-N-methylbenzamide
4-[3-[4-Cyano-3-(trifluoromethyl)phenyl]-5,5-dimethyl-2,4-dioxo-1-imidazolidinyl]-2-fluoro-N-methylbenzamide
(11aS)-10,11,12,13-Tetrahydro-5-hydroxy-3,7-diphenyl-diindeno[7,1-de:1,7-fg][1,3,2]dioxaphosphocin-5-oxide
(11aS)-10,11,12,13-Tetrahydro-5-hydroxy-3,7-diphenyl-diindeno[7,1-de:1,7-fg][1,3,2]dioxaphosphocin-5-oxide
4-(2,5-dioxo-1-pyrrolidinyl)-N-[2-(4-methoxyphenyl)-4,6-dihydrothieno[3,4-c]pyrazol-3-yl]benzamide
4-(2,5-dioxo-1-pyrrolidinyl)-N-[2-(4-methoxyphenyl)-4,6-dihydrothieno[3,4-c]pyrazol-3-yl]benzamide
6-methyl-2-[(4-pyrrolidin-1-ylsulfonylbenzoyl)amino]-5,7-dihydro-4H-thieno[2,3-c]pyridine-3-carboxamide
6-methyl-2-[(4-pyrrolidin-1-ylsulfonylbenzoyl)amino]-5,7-dihydro-4H-thieno[2,3-c]pyridine-3-carboxamide
(3r,4s)-1-{6-[3-(Methylsulfonyl)phenyl]pyrimidin-4-Yl}-4-(2,4,5-Trifluorophenyl)pyrrolidin-3-Amine
(3r,4s)-1-{6-[3-(Methylsulfonyl)phenyl]pyrimidin-4-Yl}-4-(2,4,5-Trifluorophenyl)pyrrolidin-3-Amine
6-[4-(4-bromobenzoyl)-3-fluorophenoxy]-N-methyl-N-(prop-2-en-1-yl)hexan-1-aminium
6-[4-(4-bromobenzoyl)-3-fluorophenoxy]-N-methyl-N-(prop-2-en-1-yl)hexan-1-aminium
3-L-threonyl-AMP
3-L-threonyl-AMP
An L-threonine derivative that is the ester obtained by formal condensation of the carboxy group of L-threonine with the 3-hydroxy group of AMP.
1-[2-(2,4-dichlorophenyl)-2-(1H-indol-3-yl)ethyl]-3-[3-(dimethylamino)propyl]thiourea
1-[2-(2,4-dichlorophenyl)-2-(1H-indol-3-yl)ethyl]-3-[3-(dimethylamino)propyl]thiourea
2-{[(4E)-4-(4-methoxybenzylidene)-5-oxo-1-phenyl-4,5-dihydro-1H-imidazol-2-yl]thio}-N-(5-methylisoxazol-3-yl)acetamide
2-{[(4E)-4-(4-methoxybenzylidene)-5-oxo-1-phenyl-4,5-dihydro-1H-imidazol-2-yl]thio}-N-(5-methylisoxazol-3-yl)acetamide
N-[5-[2-(5-chloro-2-methylanilino)-4-thiazolyl]-4-methyl-2-thiazolyl]heptanamide
N-[5-[2-(5-chloro-2-methylanilino)-4-thiazolyl]-4-methyl-2-thiazolyl]heptanamide
(1R,9S,10S,11S)-12-(2-fluorophenyl)sulfonyl-10-(hydroxymethyl)-6-oxo-5-[(E)-prop-1-enyl]-7,12-diazatricyclo[7.2.1.02,7]dodeca-2,4-diene-11-carboxylic acid
(1R,9S,10S,11S)-12-(2-fluorophenyl)sulfonyl-10-(hydroxymethyl)-6-oxo-5-[(E)-prop-1-enyl]-7,12-diazatricyclo[7.2.1.02,7]dodeca-2,4-diene-11-carboxylic acid
(1S,9R,10R,11R)-12-(2-fluorophenyl)sulfonyl-10-(hydroxymethyl)-6-oxo-5-[(E)-prop-1-enyl]-7,12-diazatricyclo[7.2.1.02,7]dodeca-2,4-diene-11-carboxylic acid
(1S,9R,10R,11R)-12-(2-fluorophenyl)sulfonyl-10-(hydroxymethyl)-6-oxo-5-[(E)-prop-1-enyl]-7,12-diazatricyclo[7.2.1.02,7]dodeca-2,4-diene-11-carboxylic acid
4-Hydroxy-5-(3,4,5-trihydroxyphenyl)-valeric acid-O-methyl-O-glucuronide
4-Hydroxy-5-(3,4,5-trihydroxyphenyl)-valeric acid-O-methyl-O-glucuronide
(7r,8s,8as)-8-hydroxy-7-methyl-6-oxo-3-[(1z)-prop-1-en-1-yl]-8,8a-dihydro-1h-isochromen-7-yl 3-chloro-4,6-dimethoxy-2-methylbenzoate
(7r,8s,8as)-8-hydroxy-7-methyl-6-oxo-3-[(1z)-prop-1-en-1-yl]-8,8a-dihydro-1h-isochromen-7-yl 3-chloro-4,6-dimethoxy-2-methylbenzoate
(2r,3s)-10-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-2-methoxy-7-phenyl-2h,3h-[1,4]dioxino[2,3-g]chromen-9-one
(2r,3s)-10-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-2-methoxy-7-phenyl-2h,3h-[1,4]dioxino[2,3-g]chromen-9-one
4,7-dimethyl (1s,4ar,7s,7ar)-4a-hydroxy-5-oxo-1-{[(2s,3s,4r,5s,6s)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-1h,6h,7h,7ah-cyclopenta[c]pyran-4,7-dicarboxylate
4,7-dimethyl (1s,4ar,7s,7ar)-4a-hydroxy-5-oxo-1-{[(2s,3s,4r,5s,6s)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-1h,6h,7h,7ah-cyclopenta[c]pyran-4,7-dicarboxylate
3-bromo-4,6-dihydroxy-2-methyl-5-[(2e,4e)-3-methyl-5-[(1s,2s,6s)-1,2,6-trimethyl-3-oxocyclohexyl]penta-2,4-dien-1-yl]benzaldehyde
3-bromo-4,6-dihydroxy-2-methyl-5-[(2e,4e)-3-methyl-5-[(1s,2s,6s)-1,2,6-trimethyl-3-oxocyclohexyl]penta-2,4-dien-1-yl]benzaldehyde
(2r,3r)-10-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-7-phenyl-2h,3h-[1,4]dioxino[2,3-g]chromen-9-one
(2r,3r)-10-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-7-phenyl-2h,3h-[1,4]dioxino[2,3-g]chromen-9-one
(2r,3s,4r,5r,6s)-6-({[(2s,3s,4s)-3,4-dihydroxy-4-(hydroxymethyl)oxolan-2-yl]oxy}methyl)-3,4,5-trihydroxyoxan-2-yl 3,4-dihydroxybenzoate
(2r,3s,4r,5r,6s)-6-({[(2s,3s,4s)-3,4-dihydroxy-4-(hydroxymethyl)oxolan-2-yl]oxy}methyl)-3,4,5-trihydroxyoxan-2-yl 3,4-dihydroxybenzoate
3-bromo-4,6-dihydroxy-2-methyl-5-[3-methyl-5-(1,2,6-trimethyl-3-oxocyclohexyl)penta-2,4-dien-1-yl]benzaldehyde
3-bromo-4,6-dihydroxy-2-methyl-5-[3-methyl-5-(1,2,6-trimethyl-3-oxocyclohexyl)penta-2,4-dien-1-yl]benzaldehyde
1-(3-acetyl-2-hydroxy-4,6-dimethoxyphenyl)-4,5-dihydroxy-2-methylanthracene-9,10-dione
1-(3-acetyl-2-hydroxy-4,6-dimethoxyphenyl)-4,5-dihydroxy-2-methylanthracene-9,10-dione
1,2,9,10-tetraazaheptacyclo[8.6.6.6²,⁹.0³,⁸.0¹¹,¹⁶.0¹⁷,²².0²³,²⁸]octacosa-3,5,7,11,13,15,17,19,21,23,25,27-dodecaene-4,15-dicarboxylic acid
1,2,9,10-tetraazaheptacyclo[8.6.6.6²,⁹.0³,⁸.0¹¹,¹⁶.0¹⁷,²².0²³,²⁸]octacosa-3,5,7,11,13,15,17,19,21,23,25,27-dodecaene-4,15-dicarboxylic acid
8-hydroxy-7-methyl-6-oxo-3-(prop-1-en-1-yl)-8,8a-dihydro-1h-isochromen-7-yl 3-chloro-4,6-dimethoxy-2-methylbenzoate
8-hydroxy-7-methyl-6-oxo-3-(prop-1-en-1-yl)-8,8a-dihydro-1h-isochromen-7-yl 3-chloro-4,6-dimethoxy-2-methylbenzoate
4,7-dimethyl 4a-hydroxy-5-oxo-1-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-1h,6h,7h,7ah-cyclopenta[c]pyran-4,7-dicarboxylate
4,7-dimethyl 4a-hydroxy-5-oxo-1-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-1h,6h,7h,7ah-cyclopenta[c]pyran-4,7-dicarboxylate
6-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-9-phenyl-2h,3h-[1,4]dioxino[2,3-h]chromen-7-one
6-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-9-phenyl-2h,3h-[1,4]dioxino[2,3-h]chromen-7-one
(7r,8s,8as)-8-hydroxy-7-methyl-6-oxo-3-[(1e)-prop-1-en-1-yl]-8,8a-dihydro-1h-isochromen-7-yl 3-chloro-4,6-dimethoxy-2-methylbenzoate
(7r,8s,8as)-8-hydroxy-7-methyl-6-oxo-3-[(1e)-prop-1-en-1-yl]-8,8a-dihydro-1h-isochromen-7-yl 3-chloro-4,6-dimethoxy-2-methylbenzoate
(1s,2s,3e,6r,13r)-8-chloro-11-[(1e,3e,5s)-3,5-dimethylhepta-1,3-dien-1-yl]-2-hydroxy-3-(1-hydroxyethylidene)-6-methyl-5,12,14-trioxatetracyclo[7.5.0.0¹,¹³.0²,⁶]tetradeca-8,10-diene-4,7-dione
(1s,2s,3e,6r,13r)-8-chloro-11-[(1e,3e,5s)-3,5-dimethylhepta-1,3-dien-1-yl]-2-hydroxy-3-(1-hydroxyethylidene)-6-methyl-5,12,14-trioxatetracyclo[7.5.0.0¹,¹³.0²,⁶]tetradeca-8,10-diene-4,7-dione
2-[(4-{[4-(2h-1,3-benzodioxol-5-ylmethyl)-1-methylimidazol-2-yl]imino}-1-methyl-5-oxoimidazolidin-2-ylidene)amino]ethanesulfonic acid
2-[(4-{[4-(2h-1,3-benzodioxol-5-ylmethyl)-1-methylimidazol-2-yl]imino}-1-methyl-5-oxoimidazolidin-2-ylidene)amino]ethanesulfonic acid
(2r,3r)-6-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-9-phenyl-2h,3h-[1,4]dioxino[2,3-h]chromen-7-one
(2r,3r)-6-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-9-phenyl-2h,3h-[1,4]dioxino[2,3-h]chromen-7-one
8-chloro-11-(3,5-dimethylhepta-1,3-dien-1-yl)-2-hydroxy-3-(1-hydroxyethylidene)-6-methyl-5,12,14-trioxatetracyclo[7.5.0.0¹,¹³.0²,⁶]tetradeca-8,10-diene-4,7-dione
8-chloro-11-(3,5-dimethylhepta-1,3-dien-1-yl)-2-hydroxy-3-(1-hydroxyethylidene)-6-methyl-5,12,14-trioxatetracyclo[7.5.0.0¹,¹³.0²,⁶]tetradeca-8,10-diene-4,7-dione
10-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-7-phenyl-2h,3h-[1,4]dioxino[2,3-g]chromen-9-one
10-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-7-phenyl-2h,3h-[1,4]dioxino[2,3-g]chromen-9-one
4,7-dimethyl (1s,4ar,7s,7ar)-4a-hydroxy-5-oxo-1-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-1h,6h,7h,7ah-cyclopenta[c]pyran-4,7-dicarboxylate
4,7-dimethyl (1s,4ar,7s,7ar)-4a-hydroxy-5-oxo-1-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-1h,6h,7h,7ah-cyclopenta[c]pyran-4,7-dicarboxylate
