Using SCc1ccccc1, Cc1noc(-c2ccc(Br)cc2)c1C(=O)CBr to produce Cc1noc(-c2ccc(Br)cc2)c1C(=O)CSCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.