Using CNc1nc(-c2cc(F)c(C#N)c(F)c2)cc(N2CCC[C@H]2C)n1, CS to produce CNc1nc(-c2cc(F)c(C#N)c(SC)c2)cc(N2CCC[C@H]2C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.