InChI=1S/C22H20O13/c1-32-19-14-10(25)5-12(7-2-3-8(23)9(24)4-7)33-13(14)6-11(26)18(19)34-22-17(29)15(27)16(28)20(35-22)21(30)31/h2-6,15-17,20,22-24,26-29H,1H3,(H,30,31)