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