Fig. (2) Gas Chromatography-Mass Spectrometry chromatogram of the ethyl acetate extract of N. tabacum [1] 3,4,5,6-Tetrahydro-1,3-dimethyl-2(1h)-pyrimidinone; [2] Pyridine, 3-(1-methyl-2-pyrrolidinyl)-, (S); [3] Isododecane; [4] n-Pentadecane; [5] Tetradecylaldehyde.