(3beta,5alpha,11alpha,12beta,14beta,17alpha)-12-(Acetyloxy)-3-[[2,6-dideoxy-4-O-(6-deoxy-3-O-methyl-beta-D-allopyranosyl)-3-O-methyl-beta-D-arabinohexopyranosyl]oxy]-8,14-epoxy-11-(2-methyl-1-oxobutoxy)pregnan-20-one