Using Cc1cc(C)n2nc(SCc3nc(-c4ccccc4)c[nH]3)nc2c1, BrCc1ccccc1 to produce Cc1cc(C)n2nc([SH](Cc3ccccc3)Cc3nc(-c4ccccc4)c[nH]3)nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.