Using Cc1ccc(S(=O)(=O)Cl)cc1, OCC1c2ccccc2C=Cc2cc(Br)ccc21 to produce Cc1ccc(S(=O)(=O)OCC2c3ccccc3C=Cc3cc(Br)ccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.