InChI=1S/C22H20O12/c23-7-9-6-10(32-22-17(29)14(26)16(28)20(34-22)21(30)31)12(24)11-13(25)15(27)19(33-18(9)11)8-4-2-1-3-5-8/h1-6,14,16-17,20,22-24,26-29H,7H2,(H,30,31)