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]([C@H](O[C@H]1C)OC/C2=C\C=C/CC/C(C)=C/[C@H](CC)[C@@H](O[C@H]3[C@H]([C@H]([C@@H](C(C)(O3)C)OC(C(C)C)=O)O)O)/C(C)=C/C(C)=C/C[C@]([C@H](O)C)([H])OC2=O)OC)[C@H]1OC(C4=C(C(Cl)=C(C(Cl)=C4O)O)CC)=O