Using Nc1ccc(OC(F)(F)F)cc1Cl, COC(=O)c1ccc(OCC(F)(F)F)cn1 to produce O=C(Nc1ccccc1Cl)c1ccc(OCC(F)(F)F)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.