Using O=C1NC(=O)c2cc(OCc3ccc(F)cc3)ccc21, NC(=O)CBr to produce NC(=O)CN1C(=O)c2ccc(OCc3ccc(F)cc3)cc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.