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