[{"from": "human", "value": "Provide a description of this molecule. [C][O][C][=N][C][=C][C][=Branch1][Ring2][=N][Ring1][=Branch1][N]"}, {"from": "gpt", "value": "The molecule is pyrimidine substituted with a methoxy group at position C-2 and an amine group at C-4. It has a role as a metabolite. It is an aminopyrimidine, an aromatic ether and a methylcytosine. It is functionally related to a cytosine."}]