[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a piperidine alkaloid that is piperidine substituted by a 2-oxo-3-[(2R)-piperidin-2-yl]propyl group at position 2. It has a role as a plant metabolite. It is a piperidine alkaloid and a ketone."}, {"from": "gpt", "value": "[C][C][C][N][C@H1][Branch1][Ring2][C][Ring1][=Branch1][C][C][=Branch1][C][=O][C][C@H1][C][C][C][C][N][Ring1][=Branch1]"}]