[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a diterpene lactone. It has a role as a metabolite."}, {"from": "gpt", "value": "[C][C][=Branch2][Ring1][O][=C][C][C][C][=C][C@H1][Branch1][=Branch1][O][C][Ring1][Branch1][=O][C][/C][=Branch1][=Branch2][=C][/C][C][C][=Branch1][C][=O][C][/C][C]"}]