11beta-Deoxyprednisolone 17-acetate 17,21-Dihydroxypregna-1,4-diene-3,20-dione 17-acetate 17-Acetyloxy-21-hydroxypregna-1,4-diene-3,20-dione 17-Aco-21-OHPDD 17alpha,21-Dihydroxypregna-1,4-diene-3,20-dione 17-acetate 49751-53-3 Pregna-1,4-diene-3,20-dione, 17-(acetyloxy)-21-hydroxy-