InChI=1S/C17H10Cl2N2O4/c18-9-3-1-2-8(6-9)13-14(16(23)21-15(13)22)20-10-4-5-12(19)11(7-10)17(24)25/h1-7H,(H,24,25)(H2,20,21,22,23)