InChI=1S/C21H18O13/c22-6-3-11-13(9(24)5-10(32-11)7-1-2-8(23)15(26)14(7)25)12(4-6)33-21-18(29)16(27)17(28)19(34-21)20(30)31/h1-5,16-19,21-23,25-29H,(H,30,31)