Chemical Name:(17R)-4'-Chloro-5'-ethyl-9-fluoro-11b-hydroxy-16b-methylspiro[androsta-1,4-diene-17,2'(3'H)-furan]-3,3'-dione ( 17a-spiro compound) (as per EP); 9a-Fluoro-11b-hydroxy-16b-methyl 3-oxo-androsta-1,4-diene-17(R)-spiro-2'-[4'-chloro-5'-ethylfuran-3'(2'H)-one] (as per USP)
