Using O=C1CCCCN1, O=C(NCCc1ccccc1Cl)c1cc(Br)ccc1Cl to produce O=C(NCCc1ccccc1Cl)c1cc(N2CCCCC2=O)ccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.