Using Cc1cc(OS(=O)(=O)c2ccc(Br)cc2)cc(=O)n1Cc1ccccc1, OCc1cccc(Cl)c1 to produce Cc1cc(OCc2cccc(Cl)c2)cc(=O)n1Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.