[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a gamma-lactone. It is functionally related to a D-apiofuranose."}, {"from": "gpt", "value": "[C][C@@][Branch1][N][C@H1][Branch1][Branch2][C][=Branch1][C][=O][O][Ring1][=Branch1][O][Branch1][Ring1][C][O][O]"}]