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