InChI=1S/C20H12Cl2N4O2/c21-13-6-12(10-23)7-15(8-13)28-19-9-14(3-4-17(19)22)27-11-18-16-2-1-5-24-20(16)26-25-18/h1-9H,11H2,(H,24,25,26)