[3,4-diacetyloxy-5-[4,5-diacetyloxy-6-(2-hydroxyethylcarbamoyl)-2-[[11 -(2-hydroxyethylcarbamoyl)-4,4,6a,6b,8a,11,14b-heptamethyl-14-oxo-2,3, 4a,5,6,7,8,9,10,12,12a,14a-dodecahydro-1H-picen-3-yl]oxy]oxan-3-yl]oxy -6-(2-hydroxyethylcarbamoyl)oxan-2-yl] acetate