Using COc1ccc(S(=O)(=O)n2cc(OC(C)=O)c3cc(Br)ccc32)cc1 to produce COc1ccc(S(=O)(=O)n2cc(O)c3cc(Br)ccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.