Using COC(=O)c1[nH]c(=O)c(O)c2c1CCN(Cc1ccc(F)cc1)C2=O to produce O=C(O)c1[nH]c(=O)c(O)c2c1CCN(Cc1ccc(F)cc1)C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.