Using Nc1nc2nc[nH]c2c(=S)[nH]1, BrC(c1ccccc1)c1ccccc1 to produce Nc1nc(SC(c2ccccc2)c2ccccc2)c2[nH]cnc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.