Using CN1CCCC(=O)CC1, O=Cc1ccc([N+](=O)[O-])cc1 to produce CN1CC/C(=C\c2ccc([N+](=O)[O-])cc2)C(=O)/C(=C/c2ccc([N+](=O)[O-])cc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.