InChI=1S/C21H18O12/c22-8-4-10(24)15-11(25)6-13(31-14(15)5-8)7-1-2-12(9(23)3-7)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)