SMILES: CC1=C(NC(=C1CCC(=O)O)N=NC2=CC=CC=C2)/C=C\\3/C(=C(C(=O)N3)C)C=C
Description: The molecule is a synthetic dipyrrin derived from rings A and D of bilirubin IXalpha in which C-9 carries a phenyldiazenyl substituent. It is a member of dipyrrins and an azo compound. It is a tautomer of a 3-[(2E)-4-methyl-5-[(Z)-(4-methyl-5-oxo-3-vinyl-1,5-dihydro-2H-pyrrol-2-ylidene)methyl]-2-(phenylhydrazono)-2H-pyrrol-3-yl]propanoic acid.