Using O=C1COCC(c2ccc(F)c(F)c2)N1, O=C(Cl)Oc1ccc([N+](=O)[O-])cc1 to produce O=C1COCC(c2ccc(F)c(F)c2)N1C(=O)Oc1ccc([N+](=O)[O-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.