InChI=1S/C22H21O13/c1-32-13-4-7(2-3-9(13)23)18-10(24)5-8-12(33-18)6-11(25)19(14(8)26)34-22-17(29)15(27)16(28)20(35-22)21(30)31/h2-6,15-17,20,22-29H,1H3,(H,30,31)