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