Using CC[C@@]1(C)O[C@H](C(C)(C)C)OC1=O, CSc1ccc(Br)cc1 to produce CC[C@]1(C)O[C@H](C(C)(C)C)OC1(O)c1ccc(SC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.