InChI=1S/C21H23ClN2O9/c1-24(2)13-12-16(28)9-10(15(27)8-6(25)4-3-5(22)7(8)14(9)26)18(30)21(12,33)19(31)11(17(13)29)20(23)32/h3-4,9,11-14,16-17,25-26,28-30,33H,1-2H3,(H2,23,32)/t9?,11?,12?,13?,14?,16?,17?,21-/m0/s1