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