Using COC(=O)c1cccc(Sc2c(C)[nH]c3cc(Br)ccc23)c1, CS(=O)[O-] to produce COC(=O)c1cccc(Sc2c(C)[nH]c3cc(S(C)(=O)=O)ccc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.