preferred_name: a steroid 1,3-dione + AH2 => a 3-oxo-Delta(1)-steroid + A + H2O
preferred_name_lc: a steroid 1,3-dione + ah2 => a 3-oxo-delta(1)-steroid + a + h2o
label: a steroid 1,3-dione + AH2 => a 3-oxo-Delta(1)-steroid + A + H2O
label_lc: a steroid 1,3-dione + ah2 => a 3-oxo-delta(1)-steroid + a + h2o