Using O=C(Cl)c1ccc(Br)cc1, CN1CCCC1c1ccccc1-c1ccccc1 to produce CN1CCCC1c1ccc(-c2ccc(C(=O)c3ccc(Br)cc3)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.