[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an oxacycle."}, {"from": "gpt", "value": "[C][C][C][C][Branch2][Ring1][#Branch2][C][C][Ring1][Branch1][C][C][C][Branch1][S][C][C][Ring1][#Branch1][Branch1][=Branch2][O][C][Ring1][=Branch1][Branch1][C][C][C][C][O][O]"}]