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