Using CNc1cc(Cl)c(F)cc1N, O=C(O)c1cnccc1C(F)(F)F to produce CNc1cc(Cl)c(F)cc1NC(=O)c1cnccc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.