Using CC(=O)NCCO, O=C(O)C(Cc1cccc(C(F)(F)F)c1)c1ccc(C(F)(F)F)cc1 to produce CC(=O)NCCOC(=O)C(Cc1cccc(C(F)(F)F)c1)c1ccc(C(F)(F)F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.