Rifaximin EP Impurity E

Chemical Name: 5,17,19,21-Tetrahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-1,6,9,11(2H)-tetrone 21-Acetate; 1,4-Dideoxy-1,4-dihydro-1,4-dioxo-rifamycin

Smile: O=C1C2=C(C(C=C3NC(/C(C)=C/C=C/[C@H](C)[C@H](O)[C@@H](C)[C@@H](O)[C@H]4C)=O)=O)C(C3=O)=C(O)C(C)=C2O[C@@]1(O/C=C/[C@@H]([C@H]([C@@]4([H])OC(C)=O)C)OC)C