Tulathromycin Impurity C

Chemical Name: (2R,3S,4R,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-3,4,10-trihydroxy-13-(((5S,6S,8R,10R)-10-methoxy-6,10-dimethyl-3-propyl-1,7-dioxa-3-azaspiro[4.5]decan-8-yl)oxy)-3,5,8,10,12,14-hexamethyl-1-oxa-6-azacyclopentadecan-15-one