Using COC(=O)c1c(C(C)=O)cc(F)c(F)c1Nc1ccccc1Cl to produce CC(=O)c1cc(F)c(F)c(Nc2ccccc2Cl)c1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.