[{"from": "human", "value": "What can you tell me about this molecule? [C][NH1+1][C][C][C][C@@H1][Ring1][Branch1][C][=C][N][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is the conjugate acid of (R)-nicotine arising from selective protonation of the tertiary amino group; major species at pH 7.3. It is an ammonium ion derivative and an organic cation. It is a conjugate acid of a (R)-nicotine. It is an enantiomer of a (S)-nicotinium(1+)."}]