[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][=C][Branch2][Ring1][=Branch2][N][C][=Branch1][O][=C][Ring1][Branch1][C][C][C][=Branch1][C][=O][O][N][=N][C][=C][C][=C][C][=C][Ring1][=Branch1][/C][=C][/C][=Branch1][N][=C][Branch1][Branch2][C][=Branch1][C][=O][N][\\-Ring1][=Branch1][C][C][=C]"}, {"from": "gpt", "value": "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."}]