Chemical Name : 20-methylidene-3-oxopregn-4-en-21-al; Progesterone Related Compound (3-Oxo-Pregna-4,20-Diene-20-Carboxaldehyde);

Smiles : C[C@@]12[C@@H](C(C=O)=C)CC[C@@]1([H])[C@]3([H])CCC4=CC(CC[C@]4(C)[C@@]3([H])CC2)=O