Using CS(=O)(=O)Nc1ccc(OC(=O)c2ccc(CCBr)cc2)cc1 to produce C=Cc1ccc(C(=O)Oc2ccc(NS(C)(=O)=O)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.