[{"from": "human", "value": "Describe this molecule. [C][C][=C][Branch1][O][N][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O][C][C@@][Branch1][S][C@@H1][Branch1][O][N][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O][C][O][C]"}, {"from": "gpt", "value": "The molecule is a pyrimidone that is thymine which is substituted at position 6 by a [(4R,5R)-4-(hydroxymethyl)thymin-5-yl]methyl group. It is a pyrimidone and a primary alcohol. It is functionally related to a thymine."}]