Using COC(=O)c1ccc(OC)c2c1c1cc([N+](=O)[O-])ccc1n2C to produce COc1ccc(C(=O)O)c2c3cc([N+](=O)[O-])ccc3n(C)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.