[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][O][C][=Branch1][C][=O][C][Branch1][=Branch2][C][C][C][C][C][N][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a central nervous system stimulant used for the therapy of attention deficit disorder and narcolepsy. Methylphenidate has been linked to a low rate of serum aminotransferase elevations during therapy and to rare instances of acute, clinically apparent liver injury, generally after its intravenous abuse."}]