[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule are organic compounds containing an oxolane (tetrahydrofuran) ring, which is a saturated aliphatic five-member ring containing one oxygen and five carbon atoms."}, {"from": "gpt", "value": "[C][C][C][Branch1][P][C][C][Branch1][Ring2][O][Ring1][Branch1][C][N+1][Branch1][C][C][Branch1][C][C][C][O]"}]