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