Using CCCC1(c2ccccc2)N=C(C)N(CC(=O)c2ccc([N+](=O)[O-])cc2)C1=O to produce CCCC1(c2ccccc2)N=C(C)N(CC(=O)c2ccc(N)cc2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.