InChI=1S/C21H20O12/c22-8-6-9-10(12(24)14(26)17(31-9)7-4-2-1-3-5-7)18(11(8)23)32-21-16(28)13(25)15(27)19(33-21)20(29)30/h1-6,13-17,19,21-23,25-28H,(H,29,30)