Using C#Cc1c(C#N)nn(-c2c(Cl)cc(C(F)(F)F)cc2Cl)c1Cl, O=C1CCC(=O)N1Br to produce N#Cc1nn(-c2c(Cl)cc(C(F)(F)F)cc2Cl)c(Cl)c1C#CBr, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.