[{"from": "human", "value": "Please give me some details about this molecule. [C][C][=C][C][=C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][Ring1][#Branch2][=C][Branch1][N][C][=C][C][=C][C][=C][Ring2][Ring1][C][Ring1][=Branch1][C]"}, {"from": "gpt", "value": "The molecule is a tetraphene having methyl substituents at the 7- and 12-positions. It is a potent carcinogen and is present in tobacco smoke. It has a role as a carcinogenic agent. It is a member of tetraphenes and an ortho-fused polycyclic arene."}]