Azithromycin Impurity Q

Chemical Name: (3R,4R,5S,6R,9R,10S,11S,12R,13S,15R,Z)-12-(((2S,3S,4S)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-6-ethyl-4,5-dihydroxy-10-(((2R,4R,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-3,5,9,11,13,15-hexamethyl-7,16-dioxa-2-azabicyclo[11.2.1]hexadec-1-en-8-one