Using COC(=O)CC(c1ccc(C(=O)OC)cc1Br)S(N)(=O)=O to produce COC(=O)c1ccc(C2CC(=O)NS2(=O)=O)c(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.