Using O=C(OCc1ccccc1)ON1C(=O)CCC1=O, COC(=O)[C@@]1(N)CC[C@@H](c2ccc(Br)cc2)C1 to produce COC(=O)[C@@]1(NC(=O)OCc2ccccc2)CC[C@@H](c2ccc(Br)cc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.