InChI=1S/C20H17NO9/c1-5-6-3-2-4-7(22)9(6)13(23)10-8(5)14(24)12-16(26)15(25)11(19(21)29)18(28)20(12,30)17(10)27/h2-4,8,10-12,14,17,22,24,27,30H,1H2,(H2,21,29)/t8?,10?,11?,12?,14?,17?,20-/m0/s1