Using OC1CCCc2ccccc21, CCc1nc(-c2ccc(Cl)cc2Cl)c(CC)nc1Br to produce CCc1nc(-c2ccc(Cl)cc2Cl)c(CC)nc1OC1CCCc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.