(11E,13E)-6-{[(2R,3R,4R,5S,6R)-5-{[(2S,4S,5R,6R)-4-hydroxy-4,6-dimethyl-5-(propanoyloxy)-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-4-(dimethylamino)-3-hydroxy-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-10-hydroxy-7-(2-hydroxyethyl)-5-methoxy-9,16-dimethyl-2-oxooxacyclohexadeca-11,13-dien-4-yl propanoate