[{"from": "human", "value": "Could you provide a description of this molecule? [C][N][C][=C][Branch1][=Branch1][N][C][Ring1][Branch1][=O][N][=C][Branch1][=Branch1][N][C][Ring1][=Branch2][=O][N]"}, {"from": "gpt", "value": "The molecule is an oxopurine that is guanine with an oxo group at position 8 and a methyl substituent at position 7. It has a role as a metabolite. It is an oxopurine and a member of 2-aminopurines. It is functionally related to a guanine."}]