7-(benzyloxy)-2-(4-(benzyloxy)phenyl)-5-hydroxy-6-methoxy-4-oxo-4H-chromen-3-yl 4-methylbenzenesulfonate

7-(benzyloxy)-2-(4-(benzyloxy)phenyl)-5-isopropoxy-6-methoxy-4-oxo-4H-chromen-3-yl 4-methylbenzenesulfonate