Using CSc1nc(C2CCCCC2)[nH]c(=O)c1C#N, COC(=O)CBr to produce COC(=O)Cn1c(C2CCCCC2)nc(SC)c(C#N)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.