Using O=C1CCC(=O)N1Br, Cc1c(N=C(c2ccccc2)c2ccccc2)ccc(C#N)c1C(F)(F)F to produce N#Cc1ccc(N=C(c2ccccc2)c2ccccc2)c(CBr)c1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.