[{"from": "human", "value": "Provide a description of this molecule. [C][C][=C][Branch2][=Branch1][Ring2][/C][=Branch2][Ring2][O][=C][/C][=C][Branch2][Ring1][=C][C][=Branch2][Ring1][=Branch2][=C][Branch1][Ring2][N][Ring1][Branch1][/C][=C][/C][=Branch1][N][=C][Branch1][Branch2][C][=Branch1][C][=O][N][\\-Ring1][=Branch1][C][C][=C][C][C][C][C][=Branch1][C][=O][O][/N][/C][\\-Ring2][Ring1][O][=C][\\C][=N][C][=Branch1][C][=O][C][=Branch1][Branch1][=C][Ring1][=Branch1][C][C][=C][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a linear tetrapyrrole produced in the reticuloendothelial system by the first step of heme degradation, catalysed by heme oxygenase. It has a role as a human metabolite and a mouse metabolite. It is a conjugate acid of a biliverdin(2-)."}]