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