InChI=1S/C21H20O14/c1-31-20(30)11(18(26)27)10-12(22)9-6(33-16(10)8-5-32-8)3-2-4-7(9)34-21-15(25)13(23)14(24)17(35-21)19(28)29/h2-4,8,11,13-15,17,21,23-25H,5H2,1H3,(H,26,27)(H,28,29)