[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=Branch1][C][=O][N][C][C][C][=C][N][C][=C][Ring1][Branch1][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C]"}, {"from": "gpt", "value": "The molecule is a hormone produced by the pineal gland that has multiple effects including somnolence, and is believed to play a role in regulation of the sleep-wake cycle. Melatonin is available over-the-counter and is reported to have beneficial effects on wellbeing and sleep. Melatonin has not been implicated in causing serum enzyme elevations or clinically apparent liver injury."}]