Using BrCCC1OCCO1, CCOC(=O)CC(=O)N1CCN(Cc2ccccc2)CC1 to produce CCOC(=O)C(CCC1OCCO1)C(=O)N1CCN(Cc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.