39262-30-1 5'-[7-(.BETA.-D-GLUCOPYRANOSYLOXY)-3,4-DIHYDRO-5-HYDROXY-6-METHYL-4-OXO-2H-1-BENZOPYRAN-2-YL]-2',4-DIHYDROXY[1,1'-BIPHENYL]-3-CARBOXYLIC ACID, INTRAMOL. 3,6'''-ESTER NSC251249