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