Using O=C(N[C@@H](Cc1cc(Cl)cc(Cl)c1)[C@H](O)CBr)OCc1ccccc1 to produce O=C(N[C@@H](Cc1cc(Cl)cc(Cl)c1)[C@H]1CO1)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.