(8S,9R,10S,11S,13S,14S,17R)-2'-ethoxy-9-fluoro-11-hydroxy-2',10,13-trimethyl-7,8,9,10,11,12,13,14,15,16-decahydrospiro[cyclopenta[a]phenanthrene-17,4'-[1,3]dioxane]-3,5'(6H)-dione