Using Br, CCOC(=O)C1CC(OS(=O)(=O)c2ccccc2)=NN1c1ncccc1Cl to produce CCOC(=O)C1CC(Br)=NN1c1ncccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.