Using CN, FC(F)(F)C(=S)N=c1ccccn1Cc1ccc(Cl)nc1 to produce CN=C(N=c1ccccn1Cc1ccc(Cl)nc1)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.