[{"from": "human", "value": "Please give me some details about this molecule. [C][N@+1][Branch1][#C][C][C][C][C@H1][Ring1][Branch1][C][=C][N][=C][C][=C][Ring1][=Branch1][O-1]"}, {"from": "gpt", "value": "The molecule is an (S)-nicotine N(1')-oxide in which the N(1')-methyl group is on the same side of the pyrrolidine ring as the pyridine substituent. The major species at pH 7.3."}]