Acetic acid 5-hydroxy-7,8-dimethoxy-2-(4-methoxy-phenyl)-4-oxo-3-(toluene-4-sulfonyloxy)-4H-chromen-6-yl ester

Acetic acid 5,7,8-trimethoxy-2-(4-methoxy-phenyl)-4-oxo-3-(toluene-4-sulfonyloxy)-4H-chromen-6-yl ester