Rifabutin EP Impurity C

Chemical Name: 21,31-didehydrorifabutin

Smile: O=C1C(NC(/C(C)=C\C=C\2)=O)=C3C(C4=C1C(O)=C(C)C(O[C@]5(C)O/C=C/[C@]([H])(OC)[C@@]([H])(C)[C@](OC(C)=O)([H])[C@]([H])(C)[C@]([H])(O)[C@]([H])(C)[C@@]([H])(O)C2=C)=C4C5=O)=NC6(CCN(CC(C)C)CC6)N3