Dirithromycin EP Impurity B

Chemical Name: (9S)-9-amino-3-de(2,6-dideoxy-3-C-methyl-3-O-methyl-α-L-ribo-hexopyranosyl)-9-deoxoerythromycin

Smile: C[C@H]1O[C@@H](O[C@@]([C@](C)([H])[C@@](O)([H])[C@@]2([H])C)([H])[C@](C)(O)C[C@@]([H])(C)[C@]([H])(N)[C@]([H])(C)[C@](O)([H])[C@@](O)(C)[C@](CC)([H])OC2=O)[C@H](O)[C@@H](N(C)C)C1