InChI=1S/C22H20O12/c1-31-13-7-12-14(16(25)15(13)24)10(23)6-11(33-12)8-3-2-4-9(5-8)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)