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