Tulathromycin Impurity 3

Chemical Name: (2R,3S,4S,5R,8R,10R,11R,12S,13S,14R)-11-(((2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-2-ethyl-3,4,5,10-tetrahydroxy-13-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-3,8,10,12,14-pentamethyl-1-oxa-6-azacyclopentadecan-15-one