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