Rifaximin

Chemical Name: (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-a]benzimidazole-1,15(2H)-dione ; Normix ; Xifaxan ; Rifamycin L 105

Smile: O=C1C(C2=C3C(O)=C(NC(/C(C)=C\C=C\[C@H](C)[C@H](O)[C@@H](C)[C@@H](O)[C@H]4C)=O)C5=C2N=C6N5C=CC(C)=C6)=C(C(C)=C3O)O[C@@]1(O/C=C/[C@@H]([C@H]([C@H]4OC(C)=O)C)OC)C