Using Cc1cccc(-c2cncc(N(C(=O)OC(C)(C)C)c3ccc(Cl)cc3)n2)n1 to produce Cc1cccc(-c2cncc(Nc3ccc(Cl)cc3)n2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.