InChI=1/C18H13ClN2O4/c1-9-14(19)7-6-12-15(9)20-8-13(18(24)25)16(12)21-11-4-2-10(3-5-11)17(22)23/h2-8H,1H3,(H,20,21)(H,22,23)(H,24,25)/p-1/fC18H12ClN2O4/h20-21H/q-1 9D05E06CFA03D06F