[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a pyranopyranone. It has a role as a metabolite."}, {"from": "gpt", "value": "[C][C@@H1][C@@H1][Branch2][Ring1][Branch1][O][C@H1][Branch1][S][C][=C][Ring1][=Branch1][O][C][=Branch1][C][=O][C][=C][Ring1][#Branch1][O][C][O][C]"}]