(8S,9S,10R,11S,13S,14S,17R)-11-hydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate; Hydrocortisone-17-acetate; 11β,21-Dihydroxy-3,20-dioxopregn-4-en-17-yl acetate; Cortisol 17-Acetate; Hydrocortisone oxo impurity