[{"from": "human", "value": "Please give me some details about this molecule. [C][C][C][=Branch1][C][=O][N][Branch2][Ring1][Ring2][C][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][C][C][=C][C][=C][S][Ring1][Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is an anilide resulting from the formal condensation of the aryl amino group of N-phenyl-1-[2-(2-thienyl)ethyl]piperidin-4-amine with propanoic acid. It has a role as an opioid analgesic. It is a member of piperidines, a member of thiophenes and an anilide."}]