(1R,3E,5E,7R,8R,12R,13S,14S,15R,17R)-7-({[(2R,3R,4R,5R)-5-hydroxy-3,4-dimethoxy-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}methyl)-14-{[(2R,3R,4R,5S)-5-{[(2S,4R,5S)-4,5-dihydroxy-4,6-dimethyl-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}-8-ethyl-12,17-dihydroxy-1,5,13-trimethyl-9-oxabicyclo[13.2.1]octadeca-3,5-diene-2,10-dione