Using Brc1ccc2ncccc2c1, Cn1cc(-c2ccc3nnc(S)n3n2)cn1 to produce Cn1cc(-c2ccc3nnc(Sc4ccc5ncccc5c4)n3n2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.