Using CCCCOS(=O)(=O)C1CC(C(CO)CO)C1, BrCc1ccccc1 to produce CCCCOS(=O)(=O)C1CC(C(COCc2ccccc2)COCc2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.