[{"from": "human", "value": "Describe this molecule. [C][NH1+1][C@H1][C][C][C@@H1][Ring1][Branch1][C@H1][Branch1][Branch2][C@H1][Branch1][Ring2][C][Ring1][#Branch1][O][C][=Branch1][C][=O][O][C]"}, {"from": "gpt", "value": "The molecule is the conjugate acid of ecgonine methyl ester arising from protonation of the tertiary amino group; major species at pH 7.3. It has a role as a human metabolite. It is a conjugate acid of an ecgonine methyl ester."}]