[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an oxacycle. It has a role as a metabolite."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][/C][=C][/C@@][C@@][Branch1][Ring2][O][Ring1][Ring1][Branch1][=C][C][C@H1][Branch1][=Branch2][C][C][Ring1][#Branch1][Branch1][C][C][C][O][C]"}]