Using O=Cc1ccc([N+](=O)[O-])cc1[N+](=O)[O-], C=CC(=O)OC to produce C=C(C(=O)OC)C(O)c1ccc([N+](=O)[O-])cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.