Using CC(C)(C)OC(=O)N1CC(O)C1, O=Cc1ccc(F)cc1F to produce CC(C)(C)OC(=O)N1CC(Oc2cc(F)ccc2C=O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.