Using BrC(Br)(Br)Br, CC(C)(C)OC(=O)COCCOCCOCCOCCOCCOCCO to produce CC(C)(C)OC(=O)COCCOCCOCCOCCOCCOCCBr, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.