InChI=1S/C21H18O12/c22-5-6-3-7-8(15(26)13-10(24)2-1-9(23)12(13)14(7)25)4-11(6)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)