Using Sc1nc2ccccc2o1, CSc1ccc(NC(=O)CCCCCBr)c(SC)n1 to produce CSc1ccc(NC(=O)CCCCCSc2nc3ccccc3o2)c(SC)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.