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