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