Using O=C(N(CC1CCNCC1)[C@@H]1C[C@H]1c1ccccc1)C(F)(F)F, OCCBr to produce O=C(N(CC1CCN(CCO)CC1)[C@@H]1C[C@H]1c1ccccc1)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.