Using O=C(CCCCC1CCCCC1)N1C(=O)OC[C@@H]1Cc1ccccc1, CC(C)(C)OC(=O)CBr to produce CC(C)(C)OC(=O)CC(CCCC1CCCCC1)C(=O)N1C(=O)OC[C@@H]1Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.