InChI=1S/C22H20O13/c1-33-19-12-8(4-9(24)14(19)26)13(25)7-2-6(5-23)3-10(11(7)15(12)27)34-22-18(30)16(28)17(29)20(35-22)21(31)32/h2-4,16-18,20,22-24,26,28-30H,5H2,1H3,(H,31,32)