Using FC(F)(F)c1ccc2c(c1)CCc1c(Cl)cccc1S2, N#C[Cu]C#N to produce N#Cc1cccc2c1CCc1cc(C(F)(F)F)ccc1S2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.