Using CNc1c([N+](=O)[O-])cc(C(=O)OC)c2c1CC(C)(C)O2 to produce CNc1c(N)cc(C(=O)OC)c2c1CC(C)(C)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.