[{"from": "human", "value": "Describe this molecule. [C][C][C][Branch1][#C][C][=Branch1][C][=O][C][Branch1][#Branch1][C][N][C][Ring1][#Branch1][=O][C][C][C]"}, {"from": "gpt", "value": "The molecule is a sedative of the piperidinedione derivative family that was previously used for the treatment of insomnia. However, with the introduction of newer drugs with fewer side effects, such as benzodiazepines, the clinical use of methyprylon is now limited. Methyprylon was withdrawn from the U.S. market in June 1965 and the Canadian market in September 1990 due to adverse events."}]