SMILES: C[C@]12CCC3=C4CCC(=O)C=C4CC[C@H]3[C@@H]1CC[C@]2(CC#N)O
Description: The molecule is a steroid hormone that is 17beta-hydroxy-3-oxoestra-4,9-diene substituted at position 17 by a cyanomethyl group. Used as an oral contraceptive. It has a role as a synthetic oral contraceptive, a progesterone receptor agonist and a progestin. It is a 17beta-hydroxy steroid, a 3-oxo-Delta(4) steroid, a steroid hormone and an aliphatic nitrile. It derives from a hydride of an estrane.