InChI=1S/C22H20O11/c1-30-16-6-10-11(23)7-14(31-15(10)8-12(16)24)9-4-2-3-5-13(9)32-22-19(27)17(25)18(26)20(33-22)21(28)29/h2-8,17-20,22,24-27H,1H3,(H,28,29)