1-(2,4-dihydroxy-3,6-dimethoxyphenyl)ethanone

bis(2,3,4-trihydroxyphenyl)methanone

2-(4-hydroxyphenyl)-1-(2,3,4-trihydroxyphenyl)ethanone

2,2-dimethyl-3,4-dihydrochromene-7,8-diol

2,3,4,6,7,8-hexahydro-10-hydroxy-2,2,8,8-tetramethylbenzo[1,2-b,5,4-b']dipyrane