Using COC(=O)c1ccc(Cl)c(Cn2ccc(NC(=O)c3c(F)cccc3F)n2)c1 to produce O=C(O)c1ccc(Cl)c(Cn2ccc(NC(=O)c3c(F)cccc3F)n2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.