Using O[C@@H]1CCCO[C@H]1COCCCCCCCOC1CCCCO1, CCCCCCCCCCCCCCCCBr to produce CCCCCCCCCCCCCCCCO[C@@H]1CCCO[C@H]1COCCCCCCCO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.