InChI=1S/C21H18O12/c22-5-6-4-8-11(14(26)10-7(13(8)25)2-1-3-9(10)23)18(12(6)24)32-21-17(29)15(27)16(28)19(33-21)20(30)31/h1-4,15-17,19,21-24,27-29H,5H2,(H,30,31)