[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a butenolide. It has a role as a metabolite."}, {"from": "gpt", "value": "[C][C][C][/C][=C][/C][=C][Branch1][#Branch1][C][=C][C][C][Ring1][=Branch1][C][=Branch1][C][=O][O][\\-Ring1][#Branch2]"}]