[(2S,3R,4S,5S,6R)-4,5-dihydroxy-2-[5-hydroxy-2-(4-methoxy-6-oxo-pyran-2-yl)-3-methyl-phenoxy]-6-(hydroxymethyl)tetrahydropyran-3-yl] (E)-3-(4-hydroxyphenyl)prop-2-enoate