Using CCC(=O)Nc1ccc(CBr)cc1C(=O)OC, Oc1ccc(Cl)cc1Cl to produce CCC(=O)Nc1ccc(COc2ccc(Cl)cc2Cl)cc1C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.