[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][=Branch1][C][=O][O][C][Branch1][O][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is an opioid analgesic with the potency of morphine. It has been listed as a Schedule I controlled drug in the United States, and thus is not used clinically. It is known to be a designer drug, synthesized in 1977, for the purpose of recreational use. Illicit manufacturing has occurred."}]