Using CSc1cc(C)nc(SC)c1NC(=O)CCCBr, Sc1nc2ccccc2o1 to produce CSc1cc(C)nc(SC)c1NC(=O)CCCSc1nc2ccccc2o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.