3-[(2S,3R,4S,5R,6R)-3,4-dihydroxy-6-(hydroxymethyl)-5-[(2S,3S,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-oxan-2-yl]oxy-5,7-dihydroxy-2-(4-hydroxyphenyl)chromen-4-one