(2'R,3aR,3a'S,6R,6'S,7aR,7a'R,7'R,7S)-6'-{[(2S,3S,4S,5S,6R)-5-{[(2S,3R,4R,5S,6R)-4-{[(3aR,4'R,4R,5'S,6'R,6S,7aR)-5'-{[(2S,4R,5S,6R)-5-{[(3,5-dichloro-4-hydroxy-6-methoxy-2-methylphenyl)carbonyl]oxy}-4-hydroxy-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-4'-hydroxy-4,6',7a-trimethyl-3a,4,4',5',6,6',7,7a-octahydro-3'H-spiro[[1,3]dioxolo[4,5-c]pyran-2,2'-pyran]-6-yl]oxy}-3-hydroxy-5-methoxy-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-4-hydroxy-3-methoxy-6-(methoxymethyl)-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-7-acetyl-7-hydroxy-6-methyl-3a',4',6,6',7,7',7a,7a'-octahydro-3aH-spiro[[1,3]dioxolo[4,5-c]pyran-4,2'-[1,3]dioxolo[4,5-d]pyran]-7'-yl 2-methylpropanoate