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