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

2-(4-(benzyloxy)-3-methoxyphenyl)-3-hydroxy-6,7-dimethoxy-4-oxo-4H-chromen-5-yl 4-methylbenzenesulfonate

Toluene-4-sulfonic acid 2-(4-benzyloxy-3-methoxy-phenyl)-3,6,7-trimethoxy-4-oxo-4H-chromen-5-yl ester