InChI=1S/C21H21ClN2O9/c1-24(2)21(33)9-5-6-10(15(27)12-8(25)4-3-7(22)11(12)14(6)26)16(28)20(9,32)17(29)13(18(21)30)19(23)31/h3-4,6,9,13-14,25-26,28,32-33H,5H2,1-2H3,(H2,23,31)/t6?,9?,13?,14?,20-,21?/m0/s1