(2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-13-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-alpha-L-ribo-hexopyranosyl)oxy]-2-ethyl-3,4,10-trihydroxy-3,5,6,8,10,12,14-heptamethyl-11-[(3,4,6-trideoxy-3-(dimethylamino)-beta-D-xylo-hexopyranosyl)oxy]-1-oxa-6-azacyclopentade
N-methyl-11-aza-10-deoxy-10-dihydroerythromycin A