2′-(3,4-Dihydroxyphenyl)-5,5′,7,7′-tetrahydroxy-2-(4-hydroxyphenyl)-2,2′,3,3′-tetrahydro-4H,4′H-3,8′-bichromene-4,4′-dione

2′-(3,4-Dihydroxyphenyl)-5,5′,7,7′-tetrahydroxy-2-(4-hydroxyphenyl)-2,2′,3,3′-tetrahydro-4H,4′H-3,8′-bichromen-4,4′-dion

2′-(3,4-Dihydroxyphenyl)-5,5′,7,7′-tetrahydroxy-2-(4-hydroxyphenyl)-2,2′,3,3′-tetrahydro-4H,4′H-3,8′-bichromene-4,4′-dione

2′-(3,4-Dihydroxyphényl)-5,5′,7,7′-tétrahydroxy-2-(4-hydroxyphényl)-2,2′,3,3′-tétrahydro-4H,4′H-3,8′-bichromène-4,4′-dione

[3,8′-Bi-2H-1-benzopyran]-4,4′(3H,3′H)-dione, 2′-(3,4-dihydroxyphenyl)-5,5′,7,7′-tetrahydroxy-2-(4-hydroxyphenyl)-

2′-(3,4-Dihydroxy-phenyl)-5,7,5′,7′-tetrahydroxy-2-(4-hydroxy-phenyl)-2,3,2′,3′-tetrahydro-[3,8′]bichromenyl-4,4′-dione

3-[2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4-oxo-2,3-dihydro-1-benzopyran-8-yl]-5,7-dihydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzopyran-4-one

Dihydromorelloflavone

GB 2a