2H-Pyran-5-carboxylic acid, 4,4'-((1Z)-1-formyl-1-propene-1,3-diyl)bis(3-ethenyl-2-(beta-D-glucopyranosyloxy)-3,4-dihydro-, dimethyl ester, (2S,2'S,3R,3'R,4S,4'S)- 82474-97-3