SMILES: CC1=C(NC(=C1CCC(=O)[O-])CC2=C(C(=C(N2)/C=C\\3/C(=C(C(=O)N3)C)C=C)C)CCC(=O)[O-])/C=C\\4/C(=C(C(=O)N4)C=C)C
Description: The molecule is a dicarboxylic acid dianion obtained by deprotonation of the two carboxy groups of bilirubin; major species at pH 7.3. It has a role as a human metabolite. It is a linear tetrapyrrole anion and a dicarboxylic acid dianion. It is a conjugate base of a bilirubin IXalpha.