a 3-oxo-Delta(5)-steroid => a 3-oxo-Delta(4)-steroid
a 3-oxo-delta(5)-steroid => a 3-oxo-delta(4)-steroid
a 3-oxo-Delta(5)-steroid => a 3-oxo-Delta(4)-steroid
a 3-oxo-delta(5)-steroid => a 3-oxo-delta(4)-steroid