Hydrocortisone Acetate Impurity 2

17-Hydroxy-3,20-dioxo-9,11-epoxypregn-4-en-21-yl acetate;2- ((4aS,4bS,5aS,6aS,7R,9aS,9bS) -7-hydroxy-4a,6a-dimethyl-2-oxo-2,3,4,4a,5a,6,6a,7,8,9,9a,9b,10,11-tetradecahydrocyclopenta[1,2]phenanthro[4,4a-b]oxiren-7-yl) -2-oxoethyl acetate