Fidaxomicin Impurity 1

Chemical Name: (2S,3R,4R,5R,6S)-6-(((3E,5E,8R,9E,11R,12S,13E,15E,17R)-11-ethyl-8-hydroxy-12-(((2S,3R,4R,5R)-3-hydroxy-4-(isobutyryloxy)-5,6,6-trimethyltetrahydro-2H-pyran-2-yl)oxy)-17-((R)-1-hydroxyethyl)-9,13,15-trimethyl-2-oxooxacycloheptadeca-3,5,9,13,15-pentaen-3-yl)methoxy)-4-hydroxy-5-methoxy-2-methyltetrahydro-2H-pyran-3-yl 3,5-dichloro-2-ethyl-4,6-dihydroxybenzoate

Smile: O[C@@H]1[C@@H](OC(C2=C(O)C(Cl)=C(O)C(Cl)=C2CC)=O)[C@H](C)O[C@H](OC/C(C3=O)=C\C=C\C[C@H](/C(C)=C/[C@H]([C@H](O[C@@H](OC(C)(C)[C@H](C)[C@H]4OC(C(C)C)=O)[C@@H]4O)/C(C)=C/C(C)=C/[C@H]([C@H](O)C)O3)CC)O)[C@@H]1OC