[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is synthesized from glycine or threonine. It is involved in the biosynthesis of purines; pyrimidines; and other amino acids."}, {"from": "gpt", "value": "[C][Branch1][#Branch2][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][O]"}]