InChI=1S/C22H20O13/c1-32-18-11(26)6-13-14(10(25)5-12(33-13)7-2-3-8(23)9(24)4-7)19(18)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)