[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=C][C][=C][Ring1][#Branch1][C][=Branch2][Ring1][Branch1][=C][C][=C][Ring1][=Branch1][C][C][Branch1][Ring2][O][Ring1][Ring1][C][Branch1][Branch1][C][Ring1][#Branch1][O][O][C][=C][Ring2][Ring1][Branch1]"}, {"from": "gpt", "value": "The molecule is a polycyclic aromatic hydrocarbon and metabolite of benzo(a)pyrene with potent cytotoxic and mutagenic properties. Benzo(a)pyrene-7,8-diol-9,10-epoxide binds directly to DNA and disrupts DNA replication."}]