Using Sc1nnc(-c2ccccc2)c2ccccc12, Clc1cccc(CBr)c1 to produce Clc1cccc(CSc2nnc(-c3ccccc3)c3ccccc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.