Using CC1=C(C)C(=O)N(c2cc(C(=O)O)c([N+](=O)[O-])cc2F)C1=O to produce CC1=C(C)C(=O)N(c2cc(C(=O)O)c(N)cc2F)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.