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