Using CC(C)(C)OC(=O)N1CCO[C@@H](c2ccc(O)cc2)C1, OCCCBr to produce CC(C)(C)OC(=O)N1CCO[C@@H](c2ccc(OCCCBr)cc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.