Using COC(=O)C(CCC(C)(C)Cl)N(C)S(=O)(=O)NC(=O)OCc1ccccc1 to produce COC(=O)C(CCC(C)(C)Cl)N(C)S(N)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.