[{"from": "human", "value": "Provide a brief overview of this molecule. [C][N][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=N][Ring1][Branch1][Br][C][=C][Branch2][Ring1][=N][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][N][C][=Branch1][C][=O][N][C][=C][Branch1][#Branch2][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][F][F][O][C]"}, {"from": "gpt", "value": "The molecule has been used in trials studying the treatment of Lewy Body Dementia, Visual Hallucinations, Dementia With Lewy Bodies, and REM Sleep Behavior Disorder. It is a highly selective antagonist at the 5-HT2A serotonin receptor. It increases non-REM sleep, the most restorative phase of the sleep cycle, without sacrificing REM or dream sleep. Nelotanserin works through a mechanism of action that is different from currently marketed drugs."}]