Using COC(=O)c1cc([N+](=O)[O-])c(-c2ccccc2)c([N+](=O)[O-])c1 to produce O=C(O)c1cc([N+](=O)[O-])c(-c2ccccc2)c([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.