[{"from": "human", "value": "Please give me some details about this molecule. [C][O][C][C][Branch2][Ring1][Branch1][O][C][Branch1][Branch1][C][Ring1][Branch1][O][N][C][=C][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O][C][O]"}, {"from": "gpt", "value": "The molecule is a pyrimidine nucleoside."}]