[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a member of piperazines and an isopropyl ester."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][O][C][=Branch1][C][=O][C][C][C][=Branch1][C][=O][N][C][C][N][Ring1][#Branch1][C][=Branch1][C][=S][N][C][=Branch1][C][=O][C][=C][C][=C][S][Ring1][Branch1]"}]