Rifaximin EP Impurity C

Chemical Name: 5,6,9,17,19,21-Hexahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-1,11(2H)-dione 21-Acetate Sodium Salt

Smile: CC1=C(O2)C3=C4C(C(O)=C(NC(/C(C)=C/C=C/[C@H](C)[C@H](O)[C@@H](C)[C@@H](O)[C@@H](C)[C@]([H])(OC(C)=O)[C@H](C)[C@@H](OC)/C=C/O[C@]2(C)C3=O)=O)C=C4O)=C1O.[Na]