4H-1-Benzopyran-4-one, 3-[(6-deoxy-2-O-β-D-glucopyranosyl-α-L-mannopyranosyl)oxy]-7-[(6-deoxy-α-L-mannopyranosyl)oxy]-2-(3,4-dihydroxyphenyl)-5-hydroxy- [ 138989-37-4 ]