Using CCC(Cc1ccccc1)(C(=O)c1ccc(-c2ccc(Br)cc2)cc1)N(C)C, SCCCS to produce CCC(Cc1ccccc1)(C(=O)c1ccc(-c2ccc(SCCCS)cc2)cc1)N(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.