Using Cc1ccc(C(=O)CN)s1, O=C(Cl)c1ccc(C(F)(F)F)cc1 to produce Cc1ccc(C(=O)CNC(=O)c2ccc(C(F)(F)F)cc2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.