Using CCOC(=O)CC(=O)C(C)Oc1ccc(Oc2ccc(Cl)cc2[N+](=O)[O-])cc1 to produce CCOC(=O)CC(O)C(C)Oc1ccc(Oc2ccc(Cl)cc2[N+](=O)[O-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.