Using O=C(COc1ccccc1)CS(=O)(=O)N1CCc2ccc(Cl)cc2C1 to produce O=S(=O)(CC(O)COc1ccccc1)N1CCc2ccc(Cl)cc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.