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