Using Cl, Nc1ccc(NC(=O)C(F)(F)c2ccc(F)c3ccccc23)c(F)c1CCO to produce O=C(Nc1ccc(Cl)c(CCO)c1F)C(F)(F)c1ccc(F)c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.