3-(3,4-Dimethoxyphenyl)-5-hydroxy-10-(2,3,4-trimethoxyphenyl)-9,10-dihydro-4H,8H-pyrano[2,3-f]chromene-4,8-dione

3-(3,4-Dimethoxyphenyl)-5-hydroxy-10-(2,3,4-trimethoxyphenyl)-9,10-dihydro-4H,8H-pyrano[2,3-f]chromen-4,8-dion

3-(3,4-Dimethoxyphenyl)-5-hydroxy-10-(2,3,4-trimethoxyphenyl)-9,10-dihydro-4H,8H-pyrano[2,3-f]chromene-4,8-dione

3-(3,4-Diméthoxyphényl)-5-hydroxy-10-(2,3,4-triméthoxyphényl)-9,10-dihydro-4H,8H-pyrano[2,3-f]chromène-4,8-dione

4H,8H-Benzo[1,2-b:3,4-b′]dipyran-4,8-dione, 3-(3,4-dimethoxyphenyl)-9,10-dihydro-5-hydroxy-10-(2,3,4-trimethoxyphenyl)-

3-(3,4-dimethoxyphenyl)-5-hydroxy-10-(2,3,4-trimethoxyphenyl)-9,10-dihydropyrano[2,3-f]chromene-4,8-dione