preferred_name: a 3-oxo-Delta(4)-steroid + A = a 3-oxo-Delta(1,4)-steroid + AH2
preferred_name_lc: a 3-oxo-delta(4)-steroid + a = a 3-oxo-delta(1,4)-steroid + ah2
label: a 3-oxo-Delta(4)-steroid + A = a 3-oxo-Delta(1,4)-steroid + AH2
label_lc: a 3-oxo-delta(4)-steroid + a = a 3-oxo-delta(1,4)-steroid + ah2