[{"from": "human", "value": "Provide a description of this molecule. [C][C][=C][C][C][C][=C][Ring1][Branch1][C][=Branch2][Ring1][#Branch1][=C][C][=C][Ring1][=Branch1][C][C][Branch1][Ring2][O][Ring1][Ring1][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][O][C][=C][Ring2][Ring1][Branch1]"}, {"from": "gpt", "value": "The molecule is an organic heterohexacyclic compound that is 3-methylcholanthrene which has undergone epoxidation by the formal 1,2-addition of an oxygen atom to the double bond at the 11-12 position. It has a role as a mutagen. It is an epoxide and an organic heterohexacyclic compound. It is functionally related to a 3-methylcholanthrene."}]