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