11-Oxo-fluticasone Furoate Impurity

: (6α,16α,17α)-6,9-Difluoro-17-[(2-furanylcarbonyl)oxy]-16-methyl-3,11-dioxo-androsta-1,4-diene-17-carbothioic acid;(6S,8S,9R,10S,13S,14S,16R,17R)-6,9-difluoro-17-((furan-2-carbonyl)oxy)-10,13,16-trimethyl-3,11-dioxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carbothioic S-acid ;