Using Nc1nc(Nc2cc(Cl)cc(Cl)c2)n[nH]1, CC(C)(C)OC(=O)c1cccc(C=O)c1 to produce CC(C)(C)OC(=O)c1cccc(CNc2nc(Nc3cc(Cl)cc(Cl)c3)n[nH]2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.