Using N#Cc1ccccc1Sc1ccccc1NC(=O)c1ccc(O)cc1, COC(=O)CBr to produce COC(=O)COc1ccc(C(=O)Nc2ccccc2Sc2ccccc2C#N)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.