Using Sc1ncc[nH]1, CCOC(=O)c1nn(-c2ccccc2)c(Br)c1CBr to produce CCOC(=O)c1nn(-c2ccccc2)c(Br)c1CSc1ncc[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.