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