(2R,3R)-2-(4-Hydroxyphenyl)-3,5,7-chromantriol

(2R,3R)-3,4-Dihydro-2-(4-hydroxyphenyl)-2H-1-benzopyran-3,5,7-triol

[2R,(-)]-3,4-Dihydro-2α-(4-hydroxyphenyl)-2H-1-benzopyran-3α,5,7-triol