Using Cc1cnc(NCC(F)(F)c2ccccc2)c(=O)n1CCCO, BrC(Br)(Br)Br to produce Cc1cnc(NCC(F)(F)c2ccccc2)c(=O)n1CCCBr, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.