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