Using O=C(O)C1(C(=O)Nc2ccc(F)cc2)CC1, Nc1ccc(O)cc1F to produce O=C(Nc1ccc(F)cc1)C1(C(=O)Nc2ccc(O)cc2F)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.