Using O=C(N1CCCN(C2CCC2)CC1)N1CC(O)C1, Clc1ccc(CBr)cc1 to produce O=C(N1CCCN(C2CCC2)CC1)N1CC(OCc2ccc(Cl)cc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.