SMILES: CN1C=NC2=C1C(=O)NC(=N2)N
Description: 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.