InChI=1S/C22H20O12/c1-31-12-6-11-13(16(25)15(12)24)14(23)10(7-32-11)8-2-4-9(5-3-8)33-22-19(28)17(26)18(27)20(34-22)21(29)30/h2-7,17-20,22,24-28H,1H3,(H,29,30)