2-(3,4-dihydroxyphenyl)-5-hydroxy-7-{[(2S,3R,4R,5R)-3,4,5-trihydroxy-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-3-{[(2S,3R,4S,5R)-3,4,5-trihydroxy-6-({[(2R,3R,4R,5R)-3,4,5-trihydroxy-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}methyl)-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-4H-chromen-4-one