Using COC(=O)c1cc(-c2ccc(SC)cc2)n(-c2ccccn2)n1, BrCBr to produce CSc1ccc(-c2cc(C(=O)CBr)nn2-c2ccccn2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.