Desogestrel EP Impurity E

3-Hydroxy-desogestrel; 13-ethyl-11-methylidene-18,19-dinor-17α-pregn-4-en-20-yne-3β,17-diol; 
(3S,8S,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-11-methylene-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-3,17-diol;