Using O=[N+]([O-])c1ccc(Cl)c([N+](=O)[O-])c1, CCOC(=O)CC(C)=O to produce CCOC(=O)C(C(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.