Using CC(=O)O[C@@H]1[C@H](OC(C)=O)[C@H](OC(C)=O)CO[C@H]1n1c(Br)nc2cc(Cl)c(Cl)cc21 to produce O[C@@H]1[C@H](O)[C@H](O)CO[C@H]1n1c(Br)nc2cc(Cl)c(Cl)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.