[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a delta-lactone."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch1][#C][C@H1][Branch1][O][C@H1][Branch1][=Branch1][O][C][Ring1][=Branch1][=O][C][O][O][O]"}]