InChI=1S/C21H20O12/c22-6-1-2-7-9-5-30-17-8(16(9)31-11(7)3-6)4-10(23)18(15(17)27)32-21-14(26)12(24)13(25)19(33-21)20(28)29/h1-4,9,12-14,16,19,21-27H,5H2,(H,28,29)