Using OB(O)c1ccc(Cl)cc1Cl, OC(CCc1cccnc1)COc1ccc(Br)cc1 to produce OC(CCc1cccnc1)COc1ccc(-c2ccc(Cl)cc2Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.