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