Using CS(=O)(=O)c1ccc(CBr)cc1, CCOC(=O)CC1CCc2c1[nH]c1ccc(O)cc21 to produce CCOC(=O)CC1CCc2c1[nH]c1ccc(OCc3ccc(S(C)(=O)=O)cc3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.