Using O=C(NCCCC[C@H](Br)C(=O)O)OCc1ccccc1, CC(C)(C)OC(=N)C(Cl)(Cl)Cl to produce CC(C)(C)OC(=O)C(Br)CCCCNC(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.