Using CCCN(Cc1ccc(F)cc1F)C(=O)CCc1ccc(OCc2ccccc2C(=O)OC)cc1 to produce CCCN(Cc1ccc(F)cc1F)C(=O)CCc1ccc(OCc2ccccc2C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.