InChI=1S/C22H18O12/c23-11-3-2-9-14(24)10(8-1-4-12-13(5-8)32-7-31-12)6-30-18(9)19(11)33-22-17(27)15(25)16(26)20(34-22)21(28)29/h1-6,15-17,20,22-23,25-27H,7H2,(H,28,29)