Using S=C(Cl)Cl, CCCC1CCC(C2CCC(c3cc(F)c(N)c(F)c3)CC2)CC1 to produce CCCC1CCC(C2CCC(c3cc(F)c(N=C=S)c(F)c3)CC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.