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