Using CCOC=O, CCOC(=O)C1CC2CC(=O)CC(C1)N2S(=O)(=O)c1ccc(Cl)cc1 to produce CCOC(=O)C1CC2CC(=O)C(=CO)C(C1)N2S(=O)(=O)c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.