[{"from": "human", "value": "Provide a description of this molecule. [C][C][=C][N][Branch1][#Branch2][C][=Branch1][C][=O][N][=C][Ring1][#Branch1][N][C@H1][C@H1][C@@H1][Branch1][#C][C@@][Branch1][Ring2][O][Ring1][Branch1][Branch1][Branch1][C][O][Ring1][=Branch1][C][O][O]"}, {"from": "gpt", "value": "The molecule is a pyrimidine nucleoside derived from the formal condensation of the N(1)-nitrogen of 4-amino-5-methylcytosine with 2,5-anhydro-4-(hydroxymethyl)-alpha-L-lyxofuranose. It is a nucleoside analogue, a pyrimidine nucleoside and a pyrimidone. It is functionally related to a cytosine."}]