2-(3,4-dimethoxyphenyl)-3,5,8-trihydroxy-6,7-dimethoxy-4H-chromen-4-one 4H-1-benzopyran-4-one, 2-(3,4-dimethoxyphenyl)-3,5,8-trihydroxy-6,7-dimethoxy- InChI=1/C19H18O9/c1-24-9-6-5-8(7-10(9)25-2)16-14(22)12(20)11-13(21)18(26-3)19(27-4)15(23)17(11)28-16/h5-7,21-23H,1-4H