[{"from": "human", "value": "Provide a description of this molecule. [C][N][C][C][C][C@@H1][Ring1][Branch1][C][=C][N][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a 3-(1-methylpyrrolidin-2-yl)pyridine in which the chiral centre has R-configuration. It is a conjugate base of a (R)-nicotinium(1+). It is an enantiomer of a (S)-nicotine."}]