Using Fc1cc(F)c(-c2c(Cl)nc3ncnn3c2NCC(F)(F)F)c(F)c1, CI to produce Cn1cnn2c(=NCC(F)(F)F)c(-c3c(F)cc(F)cc3F)c(Cl)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.