Using Fc1ccccc1CBr, CCOC(=O)C1CCN(Cc2ccccc2)CC1 to produce CCOC(=O)C1(Cc2ccccc2F)CCN(Cc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.