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