[{"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][O][C][=C][Ring1][Branch1][C@H1][C][=C][Branch1][S][C][C][C@H1][C@][Branch1][Ring2][C][Ring1][#Branch2][Branch1][Ring2][O][Ring1][Ring2][C][C][=Branch1][C][=O][O][Ring1][=N]"}]