(2S,3R,4S,6R)-4-(dimethylamino)-2-(((3R,5R,6R,7R,9R,11R,12R,13S,14R)-14-ethyl-12,13-dihydroxy-7-methoxy-3,5,7,9,11,13-hexamethyl-2,4,10-trioxooxacyclotetradecan-6-yl)oxy)-6-methyltetrahydro-2H-pyran-3-yl acetate