Using CI, O=C1Nc2ccc([N+](=O)[O-])cc2C(c2ccccc2)=NC1F to produce CN1C(=O)C(F)N=C(c2ccccc2)c2cc([N+](=O)[O-])ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.