Using Cc1ncc(C2=CCN(C(=O)OC(C)(C)C)CC2(C)C)cc1[N+](=O)[O-] to produce Cc1ncc(C2=CCNCC2(C)C)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.