Using NS(=O)(=O)c1cccc(Br)c1, CCOC(=O)c1nc(C)sc1N to produce CCOC(=O)c1nc(C)sc1Nc1cccc(S(N)(=O)=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.