InChI=1S/C21H23ClN2O9/c1-24(2,33)14-7-5-6-10(16(27)12-9(25)4-3-8(22)11(12)15(6)26)18(29)21(7,32)19(30)13(17(14)28)20(23)31/h3-4,6-7,13-15,17,25-26,28-29,32H,5H2,1-2H3,(H2,23,31)/t6?,7?,13?,14?,15?,17?,21-/m0/s1