Using COC(=O)c1cc(Cl)cnc1N1CC(O)(c2cccc(F)c2)C1 to produce O=C(O)c1cc(Cl)cnc1N1CC(O)(c2cccc(F)c2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.