3-(3,5-Dihydroxy-phenyl)-2-(4-hydroxy-phenyl)-2,3-dihydro-benzofuran-5-carbaldehyde 3beta-(3',5'-Dihydroxyphenyl)-2alpha-(4''-hydroxyphenyl)dihydrobenzofuran-5-carbaldehyde 5-benzofurancarboxaldehyde, 3-(3,5-dihydroxyphenyl)-2,3-dihydro-2-(4-hydroxyphenyl)-, (2R,3R)- InChI=1/C21H16O5/c22-11-12-1-6-19-18(7-12)20(14-8-16(24)10-17(25)9-14)21(26-19)13-2-4-15(23)5-3-13/h1-11,20-21,23-25H/t20-,21+/m1/s rel-(2R,3R)-3-(3,5-dihydroxyphenyl)-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-5-carbaldehyde