Using COC(=O)c1cc(C)c(C(=O)OC)c([N+](=O)[O-])c1C to produce COC(=O)c1c(C)cc(C(=O)O)c(C)c1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.