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