Spironolactone EP Impurity D

Chemical Name: S-[(2′R)-3,5′-dioxo-3′,4′-dihydro-5′H-spiro[androst-4-ene-17,2′-furan]-7α-yl] ethane(dithioperoxate) (as per EP) (2′R)-7α-(Acetyldisulfanyl)-3′,4′-dihydro-5′H-spiro[androst-4-ene-17,2′-furan]-3,5′-dione (as per USP)

Smile: C[C@@]12[C@]3(CCC(O3)=O)CC[C@@]1([H])[C@]4([H])[C@H](SSC(C)=O)CC5=CC(CC[C@]5(C)[C@@]4([H])CC2)=O