InChI=1S/C21H20O13/c22-7-3-10(25)14-12(4-7)32-13(15(14)26)2-6-1-11(9(24)5-8(6)23)33-21-18(29)16(27)17(28)19(34-21)20(30)31/h1,3-5,13,16-19,21-25,27-29H,2H2,(H,30,31)