Using CC(=N)Nc1ccc2oc(-c3cccc(-n4ccnc4)c3)c(OCc3ccccc3)c(=O)c2c1, ClC(Cl)Cl to produce CC(=N)Nc1ccc2oc(-c3cccc(-n4ccnc4)c3)c(O)c(=O)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.