Using O=S(O)c1ccccc1, COc1ccc2c(Cl)nc(C)c(-c3ccccc3)c2c1 to produce COc1ccc2c(S(=O)(=O)c3ccccc3)nc(C)c(-c3ccccc3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.