a 3-oxosteroid + A => a 3-oxo-Delta(1)-steroid + AH2
a 3-oxosteroid + a => a 3-oxo-delta(1)-steroid + ah2
a 3-oxosteroid + A => a 3-oxo-Delta(1)-steroid + AH2
a 3-oxosteroid + a => a 3-oxo-delta(1)-steroid + ah2