[17-acetyl-8,14-dihydroxy-3-[5-[5-[5-[5-(5-hydroxy-4-methoxy-6-methyl- oxan-2-yl)oxy-4-methoxy-6-methyl-oxan-2-yl]oxy-4-methoxy-6-methyl-oxan -2-yl]oxy-4-methoxy-6-methyl-oxan-2-yl]oxy-4-methoxy-6-methyl-oxan-2-y l]oxy-10,13-dimethyl-2,3,4,7,9,11,12,15,16,17-decahydro-1H-cyclopenta[ a]phenanthren-12-yl] benzoate