Using COc1cc(Br)c(CCC(=O)Nc2c(Cl)cccc2Cl)c(Br)c1 to produce COc1cc(Br)c2c(c1)N(c1c(Cl)cccc1Cl)C(=O)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.