Using Cc1ccc(-c2noc(C3CN(C(=O)OC(C)(C)C)C3)n2)cc1[N+](=O)[O-] to produce Cc1ccc(-c2noc(C3CNC3)n2)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.