Using CCOC(=O)C(CN1CCC(N(CC)CC)C1)c1ccc(Br)cc1 to produce CCN(CC)C1CCN(CC(C(=O)O)c2ccc(Br)cc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.