(3R,4S,5S,6R,7R,9R,11R,12S,13R,14R)-6-{[4-(dimethylamino)-3-hydroxy-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-14-ethyl-7,12-dihydroxy-4-[(5-hydroxy-4-methoxy-4,6-dimethyl-3,4,5,6-tetrahydro-2H-pyran-2-yl)oxy]-3,5,7,9,11,13-hexamethyloxacyclotetradecane-2,10-dione