Using CC(=O)COc1nc(-c2ccc(Cl)cc2Cl)c(-c2ccc(Cl)cc2)cc1C#N to produce CC(=O)c1oc2nc(-c3ccc(Cl)cc3Cl)c(-c3ccc(Cl)cc3)cc2c1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.