Using CC(C)(C)OC(=O)COc1ccc(CCN2C(=O)c3ccccc3C2=O)cc1[N+](=O)[O-] to produce CC(C)(C)OC(=O)COc1ccc(CCN)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.