Using OO, CN(C)CCN1C(=O)C(Cl)=C(c2ccccc2)Sc2ccccc21 to produce CN(C)CCN1C(=O)C(Cl)=C(c2ccccc2)S(=O)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.