beta-D-Glucopyranose, 2-O-(3-O-acetyl-6-deoxy-beta-D-glucopyranosyl)-6-deoxy-, 3-acetate 1-(decahydro-5''-methyl-''-((1-oxo-3-phenyl-2-propenyl)oxy)dispiro(oxirane-2,3'(2'H)-benzofuran-2',2''-(2H)pyran)-6'