[{"from": "human", "value": "Provide a description of this molecule. [C][O][C][=Branch1][C][=O][C][Branch1][=Branch2][C][C][C][C][C][NH2+1][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1].[Cl-1]"}, {"from": "gpt", "value": "The molecule is a hydrochloride. It has a role as a central nervous system stimulant. It contains a methylphenidate(1+)."}]