Using Fc1ccc(CBr)cc1, CC(C)(C)OC(=O)N[C@H](CO)C(=O)O to produce CC(C)(C)OC(=O)N[C@H](COCc1ccc(F)cc1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.