InChI=1S/C22H18O13/c1-31-10-5-8-11-17(34-18(8)14(25)12(10)23)7-3-2-6(4-9(7)33-21(11)30)32-22-16(27)13(24)15(26)19(35-22)20(28)29/h2-5,13,15-16,19,22-27H,1H3,(H,28,29)