Fidaxomicin Impurity A

Chemical Name: (2R,3S,4S,5S,6R)-6-(((3E,5E,8S,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-8-hydroxy-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-2,4-dihydroxy-6-methylbenzoate

Smile: O[C@H]1[C@H](OC(C2=C(O)C(Cl)=C(O)C(Cl)=C2C)=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](OC(C(C)C)=O)[C@@H]4O)[C@H]4O)/C(C)=C/C(C)=C/C[C@@H]([C@H](O)C)O3)CC)O)[C@H]1OC