Using CCOP(=O)(OCC)c1cc(CCC(=O)OC)ccc1CO, BrC(Br)(Br)Br to produce CCOP(=O)(OCC)c1cc(CCC(=O)OC)ccc1CBr, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.