[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a lactone."}, {"from": "gpt", "value": "[C][C@H1][C][C@H1][Branch2][Ring2][Ring2][C@@][Branch2][Ring1][#C][C@][Ring1][Branch1][C][C][=Branch1][C][=O][C@@][Branch1][S][C@@][Ring1][#Branch1][Branch1][#Branch2][C][O][C][=Branch1][C][=O][C][Ring1][O][C][Branch1][C][C][O][O][O]"}]