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