Using CCOC(=O)c1c[nH]cc1-c1cccc(F)c1, O=C1CCC(=O)N1Br to produce CCOC(=O)c1c[nH]c(Br)c1-c1cccc(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.