Using CC(C)(C)OC(=O)N1CCC(O)C1, COc1n[nH]cc1[N+](=O)[O-] to produce COc1nn(C2CN(C(=O)OC(C)(C)C)C2)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.