Using O=C(Cl)C(c1ccc(CBr)cc1)C1CCCC1, COC(=O)C1Cc2cccc(N)c2C1 to produce COC(=O)C1Cc2cccc(NC(=O)C(c3ccc(CBr)cc3)C3CCCC3)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.