Chemical Name : (3E)-13β-ethyl-3-(hydroxyimino)-18,19-dinor-17α-pregn-4-en-20-yn-17-ol (as per EP)

Smiles : CC[C@@]12[C@@](C#C)(O)CC[C@@]1([H])[C@@](CCC3=C/C4=N/O)([H])[C@]([C@@]3([H])CC4)([H])CC2