Using OCCS, COc1ccc(-c2nc(CCl)nc3cc(OC)c(OC)cc23)cc1OC to produce COc1ccc(-c2nc(CSCCO)nc3cc(OC)c(OC)cc23)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.