[{"from": "human", "value": "Please give me some details about this molecule. [C][N][C][=C][C][=N][C][=Branch1][C][=O][N][Ring1][#Branch1]"}, {"from": "gpt", "value": "The molecule is a pyrimidone that is cytosine bearing an N(4)-methyl substituent. It has a role as a metabolite. It is an aminopyrimidine, a pyrimidone and a methylcytosine. It is functionally related to a cytosine."}]