[{"from": "human", "value": "Provide a description of this molecule. [C][C][=C][Branch1][P][C][=Branch1][=N][=N+1][Branch1][=Branch2][C][=Branch1][Branch1][=C][Ring1][=Branch1][Cl][C][O-1][Cl][C][=N][O][C][=Branch1][Ring2][=N][Ring1][Branch1][C][=C][C][=Branch1][N][=C][Branch1][Branch2][C][=Branch1][Ring2][=C][Ring1][=Branch1][O][O][N+1][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a catechol-O-methyltransferase inhibitor that is used as adjunctive therapy to levodopa/carbidopa in patients with Parkinson disease experiencing difficulty with \u201coff\u201d episodes when motor symptoms breakthrough on treatment. Opicapone has been associated with a minimal rate of serum enzyme elevations during therapy and has not been linked to cases of clinically apparent liver injury with jaundice."}]