[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is the monocarboxylic acid amide resulting from the formal condensation of the aryl amino group of 3-methyl-N-phenyl-1-(2-phenylethyl)piperidin-4-amine with propanoic acid. It has a role as an opioid analgesic, a mu-opioid receptor agonist and a sedative. It is a member of piperidines and a monocarboxylic acid amide."}, {"from": "gpt", "value": "[C][C][C][=Branch1][C][=O][N][Branch2][Ring1][=Branch1][C][C][C][N][Branch1][=Branch1][C][C][Ring1][=Branch1][C][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]