Using COC(=O)CC12CCC(c3ccc(-c4ccc([N+](=O)[O-])cc4)cc3)(CC1)CO2 to produce COC(=O)CC12CCC(c3ccc(-c4ccc(N)cc4)cc3)(CC1)CO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.