Using CCOC(=O)C(C)(C)N(c1cc(C)c(Br)c(C)c1)S(N)(=O)=O to produce Cc1cc(N2C(C)(C)C(=O)NS2(=O)=O)cc(C)c1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.