Rifaximin EP Impurity D

Smile: CC1=CC2=NC3=C(C(NC(/C(C)=C\C=C\[C@]4(O)C)=O)=C(O)C5=C3C6=C(O[C@](C)(O/C=C\[C@]([H])(OC)C([H])(C)[C@@]([H])(OC(C)=O)[C@]([H])(C)[C@]([H])(O)[C@@](C)([H])C4=O)C6=O)C(C)=C5O)N2C=C1