Fluticasone Thioacid Impurity

Chemical Name: (6S,8S,9R,10S,11S,13S,14S,16R,17R)-6,9-difluoro-17-((fluoromethoxy)carbonothioyl)-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate

Smile: CCC(O[C@]1(C(OCF)=S)[C@H](C)C[C@@]2([H])[C@]3([H])C[C@H](F)C4=CC(C=C[C@]4(C)[C@@]3(F)[C@@H](O)C[C@]12C)=O)=O