Using CC(C)[C@H]1COC(=O)N1C(=O)CCC1CCCCC1, CC(C)(C)OC(=O)CBr to produce CC(C)C1COC(=O)N1C(=O)C(CC(=O)OC(C)(C)C)CC1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.