Using COc1ccc(C)cc1, O=C(Cl)c1cc([N+](=O)[O-])ccc1Cl to produce COc1ccc(C)cc1C(=O)c1cc([N+](=O)[O-])ccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.