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