Using Cc1c([N+](=O)[O-])cc([N+](=O)[O-])cc1[N+](=O)[O-] to produce Cc1c(N)cc([N+](=O)[O-])cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.