[{"from": "human", "value": "What can you tell me about this molecule? [C][N][C][=N][C][=C][Ring1][Branch1][C][=Branch1][C][=O][N][C][=Branch1][Ring2][=N][Ring1][#Branch1][N]"}, {"from": "gpt", "value": "The molecule is a 7-methylguanine that is 7H-purine substituted by an amino group at position 2, a methyl group at position 7 and a hydroxy group at position 6. It is a tautomer of a 2-amino-7-methyl-1,7-dihydro-6H-purin-6-one and a 2-imino-7-methyl-1,2,3,7-tetrahydro-6H-purin-6-one."}]