[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=C][C][=C][C][=Branch1][Branch2][=C][C][Ring1][=Branch1][=C][Ring1][#Branch2][C][=C][C][=C][Ring1][=Branch2][C][=Branch1][=N][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N+1][=Branch1][C][=O][O-1][C][=C][Ring2][Ring1][Ring1]"}, {"from": "gpt", "value": "The molecule is a polycyclic aromatic hydrocarbon belongs to the family of mutagen benzo(a)pyrene. 1-nitrobenzo(a)pyrene consists of five fused rings with a nitro-group attached to the first carbon atom of the aromatic hydrocarbon ring in with potential carcinogenicity."}]