Using Oc1ccc2c(-c3ccccc3)cc(CCl)cc2c1, Sc1ccccc1 to produce Oc1ccc2c(-c3ccccc3)cc(CSc3ccccc3)cc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.