Using BrCc1ccccc1, O=C1O[C@H]([C@@H](O)CO)C(O)=C1O to produce O=C1O[C@H]([C@@H](O)CO)C(OCc2ccccc2)=C1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.