preferred_name: (S)-6-hydroxynicotine + AH2 => (S)-nicotine + A + H2O
preferred_name_lc: (s)-6-hydroxynicotine + ah2 => (s)-nicotine + a + h2o
label: (S)-6-hydroxynicotine + AH2 => (S)-nicotine + A + H2O
label_lc: (s)-6-hydroxynicotine + ah2 => (s)-nicotine + a + h2o