2-(3,4-dihydroxyphenyl)-6-(4-hydroxyphenyl)-8-(2,4-dihydroxyphenyl)-3,4,7,8-tetrahydro-2H,6H-pyrano(2,3-f)chromene-3,7,9-triol
2-(3,4-dihydroxyphenyl)-6-(4-hydroxyphenyl)-8-(2,4-dihydroxyphenyl)-3,4,7,8-tetrahydro-2h,6h-pyrano(2,3-f)chromene-3,7,9-triol