Using Nc1cc(C(=O)c2cccc(C(=O)c3ccc(Cl)c(N)c3)c2)ccc1Cl to produce Nc1cccc(C(=O)c2cccc(C(=O)c3cccc(N)c3)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.