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