Using COc1cc2ccnc(CSc3nc4ccccc4[nH]3)c2cc1OC, O=C(OO)c1cccc(Cl)c1 to produce COc1cc2ccnc(CS(=O)c3nc4ccccc4[nH]3)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.