InChI=1/C16H16Cl2N2O4/c1-3-23-16(22)10-7(2)24-15(20)13(14(19)21)12(10)11-8(17)5-4-6-9(11)18/h4-6,12H,3,20H2,1-2H3,(H2,19,21)/t12-/m1/s1/f/h19H2 FB02C75B1DEFCBCC