(1S,2R,5R,6S,7S,8R,9R,11R,14R,15R)-6-{[(2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-8-{[(2S,3S,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-2-ethyl-9,17-dihydroxy-1,5,7,9,11,14-hexamethyl-13-aza-17-bora-3,16,18-trioxabicyclo[13.3.0]octadecan-4-one