The molecule is a biladiene that is the 15-oxo derivative of beta-bilirubin. It is a member of biladienes and a dicarboxylic acid. It is a conjugate acid of a 15-oxo-beta-bilirubin(2-).
3-[(2Z)-2-[[3-(2-carboxyethyl)-5-[4-ethenyl-5-[(Z)-(4-ethenyl-3-methyl-5-oxopyrrol-2-ylidene)methyl]-3-methyl-1H-pyrrole-2-carbonyl]-4-methyl-1H-pyrrol-2-yl]methylidene]-4-methyl-5-oxopyrrol-3-yl]propanoic acid