Using O=C(OCC1c2ccccc2-c2ccccc21)ON1C(=O)CCC1=O, NC(CC(=O)O)C(F)(F)F to produce O=C(O)CC(NC(=O)OCC1c2ccccc2-c2ccccc21)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.