IUPAC:(2R,3S,4S)-2-(4-hydroxyphenyl)-4-[(2R,3R)-3,5,7-trihydroxy-2-(4-hydroxyphenyl)-3,4-dihydro-2H-1-benzopyran-8-yl]-3,4-dihydro-2H-1-benzopyran-3,5,7-triol
IUPAC:(2R,3S,4S)-2-(4-hydroxyphenyl)-4-[(2R,3R)-3,5,7-trihydroxy-2-(4-hydroxyphenyl)-3,4-dihydro-2H-1-benzopyran-8-yl]-3,4-dihydro-2H-1-benzopyran-3,5,7-triol