Using Cn1c(=O)cc(N)n(Cc2ccc([N+](=O)[O-])cc2)c1=O, NC(=O)NCc1ccc([N+](=O)[O-])cc1 to produce Cn1c(=O)cc(N)n(Cc2ccc(N)cc2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.