Using NCc1ccccc1C(F)(F)F, CC(C)(C)OC(=O)N1CCC(C(=O)O)CC1 to produce O=C(NCc1ccccc1C(F)(F)F)C1CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.