IUPAC:(2S,3S)-2-(3,4-dihydroxyphenyl)-8-{[(2S,3S)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3,4-dihydro-2H-1-benzopyran-3-yl]oxy}-3,4-dihydro-2H-1-benzopyran-3,5,7-triol
IUPAC:(2S,3S)-2-(3,4-dihydroxyphenyl)-8-{[(2S,3S)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3,4-dihydro-2H-1-benzopyran-3-yl]oxy}-3,4-dihydro-2H-1-benzopyran-3,5,7-triol