(5R,6'S,8'S,9'R,10'S,11'S,13'S,14'S,16'R)-6',9'-difluoro-11'-hydroxy-10',13',16'-trimethylspiro[1,3-oxathiolane-5,17'-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthrene]-2,3',4-trione(5'R,6S,8S,9R,10S,11S,13S,14S,16R)-6,9-Difluoro-11-hydroxy-10,13,16-trimethyl-7,8,9,11,12,13,15,16-octahydrospiro[cyclopenta[a]phenanthrene-17,5'-[1,3]oxathiolane]-2',3,4'(6H,10H,14H)-trione(6?,11?,16?,17?)-6,9-Difluoro-11-hydroxy-16-methyl-spiro[androsta-1,4-diene-17,5'-[1,3]oxathiolane]-2',3,4'-trione(6Alpha,11Beta,16Alpha,17Alpha)-6,9-Difluoro-11-hydroxy-16-methyl-spiro[androsta-1,4-diene-17,5'-[1,3]oxathiolane]-2',3,4'-trione6alpha,9alpha-Difluoro-11beta-hydroxy-16alpha-methyl-2',3,4'-trioxo-17alpha-spiro(androsta-1,4-diene-17,5'-(1,3)oxathiolane;);(5'R,6S,8S,9R,10S,11S,13S,14S,16R)-6,9-difluoro-11-hydroxy-10,13,16-trimethyl-7,8,9,11,12,13,15,16-octahydrospiro[cyclopenta[a]phenanthrene-17,5'-[1,3]oxathiolane]-2',3,4'(6H,10H,14H)-trioneFluticasone USP Related Compound BFluticasone USP Rc B(6|A,11|A,16|A,17|A)-6,9-Difluoro-11-hydroxy-16-methyl-spiro[androsta-1,4-diene-17,5'-[1,3]oxathiolane]-2',3,4'-trione