InChI=1/C15H12Cl2N2O3/c1-9-10(7-8-22-9)15(21)19-18-14(20)6-5-11-12(16)3-2-4-13(11)17/h2-8H,1H3,(H,18,20)(H,19,21)/b6-5+/f/h18-19H B8481B14E08D64DC