Using O=[N+]([O-])c1ccc(O)cc1, C=CCOc1ccc(CC(=O)O)cc1Cl to produce C=CCOc1ccc(CC(=O)Oc2ccc([N+](=O)[O-])cc2)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.