Using Cc1ccccc1/C=C/C(=O)c1cccc([N+](=O)[O-])c1O to produce Cc1ccccc1-c1cc(=O)c2cccc([N+](=O)[O-])c2o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.