[{"from": "human", "value": "Describe this molecule. [C][C][Branch1][C][C][C][O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][N][C][=Branch1][C][=O][N][Branch1][=N][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][F][C][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C]"}, {"from": "gpt", "value": "The molecule is an atypical antipsychotic used in the treatment of hallucinations and psychosis in patients with Parkinson disease. Use of pimavanserin is associated with a low rate of serum enzyme elevations during therapy, and it has not been linked to instances of clinically apparent acute liver injury."}]