Cyclopenta[c]pyran-4-carboxylicacid, 1-(b-D-glucopyranosyloxy)-6-[[3-[4-(b-D-glucopyranosyloxy)-3-methoxyphenyl]-1-oxo-2-propenyl]oxy]-1,4a,5,6,7,7a-hexahydro-7-methyl-,[1S-[1a,4aa,6a(E),7a,7aa]]- (9C