Using O=C(NCc1ccccc1)C(C1CC1)n1c(-c2ccc(Cl)cc2)nc2cc(F)c(F)cc21, O=N[O-] to produce O=NN(Cc1ccccc1)C(=O)C(C1CC1)n1c(-c2ccc(Cl)cc2)nc2cc(F)c(F)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.