InChI=1/C13H14Cl2N2O4/c14-7-4-9(12(18)19)11(10(15)5-7)17-13(20)16-6-8-2-1-3-21-8/h4-5,8H,1-3,6H2,(H,18,19)(H2,16,17,20)/p-1/t8-/m1/s1/fC13H13Cl2N2O4/h16-17H/q-1 A9165F9095E939AF