Using CI, CCOC(=O)C(=O)Nc1c(C)cccc1[N+](=O)[O-] to produce CCOC(=O)C(=O)N(C)c1c(C)cccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.