Chemical Name : Rac-13-ethyl-17-hydroxy-18,19-dinor-17α-pregna-4,6-dien-20-yn-3-one (as per EP)

Smiles : CC[C@@]12[C@](CC[C@@]2(O)C#C)([H])[C@]3([H])C=CC4=CC(CC[C@]4([H])[C@@]3([H])CC1)=O