[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=C][Branch2][Branch1][#Branch1][N][C][=Branch1][O][=C][Ring1][Branch1][C][C][C][=Branch1][C][=O][O][C][C][=C][Branch2][Ring1][N][C][=Branch2][Ring1][#Branch1][=C][Branch1][Ring2][N][Ring1][Branch1][/C][=C][\\N][C][=Branch1][C][=O][C][=Branch1][Branch1][=C][/-Ring1][=Branch1][C][C][=C][C][C][C][C][=Branch1][C][=O][O][/C][=C][\\N][C][=Branch1][C][=O][C][=Branch1][Branch1][=C][/-Ring1][=Branch1][C][C][=C]"}, {"from": "gpt", "value": "The molecule is a biladiene that is a linear tetrapyrrole and a regioisomer of bilirubin IXalpha, in which the dipyrroles are of exovinyl type only. It is a dicarboxylic acid and a member of biladienes."}]