21-(Acetyloxy)-6α-fluoro-11β-hydroxy-16α,17-[(1-methylethylidene)bisoxy]pregna-1,4-diene-3,20-dione

6alpha-fluoro-11beta,21-dihydroxy-16alpha,17-(isopropylidenedioxy)pregna-1,4-diene-3,20-dione 21-acetate