Josamycin EP Impurity B

Chemical Name: (4R,5S,6S,7R,9R,10R,11E,13E,16R)-4-(Acetyloxy)-6-[[3,6-dideoxy-4-O-[2,6-dideoxy-3-C-methyl-4-O-(3-methylbutanoyl)-α-L-ribo-hexopyranosyl]-3-(dimethylamino)-β-D-glucopyranosyl]oxy]-10-hydroxy-7-(2-hydroxyethyl)-5-methoxy-9,16-dimethyloxacyclohexadeca-11,13-dien-2-one (as per EP)

Smile: C[C@H]1[C@H](OC(CC(C)C)=O)[C@@](O)(C)C[C@H](O[C@H]2[C@H](N(C)C)[C@@H](O)[C@H](O[C@@]([C@@]([H])(OC)[C@@](OC(C)=O)([H])C3)([H])[C@@]([H])(CCO)C[C@](C)([H])[C@@]([H])(O)/C=C/C=C/C[C@@]([H])(C)OC3=O)O[C@@H]2C)O1