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