(2S,4S,E)-methyl 3-ethylidene-4-(2-oxo-2-(((2R,3S,4S,5R,6R)-3,4,5-trihydroxy-6-(4-hydroxyphenethoxy)tetrahydro-2H-pyran-2-yl)methoxy)ethyl)-2-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)-3,4-dihydro-2H-pyran-5-carboxylate;nuezhenide