Using Sc1nnnn1-c1ccccc1, O=C1c2ccccc2C(=O)N1CBr to produce O=C1c2ccccc2C(=O)N1CSc1nnnn1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.