IUPAC:8-[(2R,3S)-5,7-dihydroxy-2-(4-hydroxyphenyl)-4-oxo-3,4-dihydro-2H-1-benzopyran-3-yl]-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4H-chromen-4-one
IUPAC:8-[(2R,3S)-5,7-dihydroxy-2-(4-hydroxyphenyl)-4-oxo-3,4-dihydro-2H-1-benzopyran-3-yl]-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4H-chromen-4-one