Fidaxomicin Impurity 4

Chemical Name:  (2S,3R,4R,5R,6S)-6-(((3E,5Z,9E,11S,12R,13E,15E,18S)-12-(((2R,3S,4R,5S)-3,4-dihydroxy-5-(isobutyryloxy)-6,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-11-ethyl-18-((R)-1-hydroxyethyl)-9,13,15-trimethyl-2-oxooxacyclooctadeca-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]([C@H]1OC(C2=C(CC)C(Cl)=C(O)C(Cl)=C2O)=O)[C@@H](OC)[C@@H](OC/C3=C\C=C/CC/C(C)=C/[C@@H]([C@H](/C(C)=C/C(C)=C/C[C@]([H])(OC3=O)[C@@H](C)O)O[C@H]4[C@@H](O)[C@@H](O)[C@H](OC(C(C)C)=O)C(O4)(C)C)CC)O[C@H]1C