Using CCCCCCCCCCCCCCCCCO, Nc1ccc(C(=O)O)cc1[N+](=O)[O-] to produce CCCCCCCCCCCCCCCCCOC(=O)c1ccc(N)c([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.