Using Nc1ccc(Cl)cc1C(=O)O, COC(=O)C(N)Cc1ccc(Br)cc1 to produce COC(=O)C(Cc1ccc(Br)cc1)NC(=O)c1cc(Cl)ccc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.