[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a butenolide."}, {"from": "gpt", "value": "[C][Branch2][Ring1][Ring2][C][=Branch1][N][=C][Branch1][Branch2][C][=Branch1][C][=O][O][Ring1][=Branch1][Cl][C][Branch1][C][Cl][Cl][O]"}]