Using FC1=C(F)C(F)(F)C(F)(F)C1(F)F, COc1ccc(-c2sc(-c3ccc(C#N)cc3)cc2Br)cc1 to produce COc1ccc(-c2sc(-c3ccc(C#N)cc3)cc2C2=C(F)C(F)(F)C(F)(F)C2(F)F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.