Using O=C([O-])[O-], Cc1ccccc1[C@H](CC(=O)c1ccc(=O)[nH]c1)c1ccc(Br)cc1 to produce Cc1ccccc1[C@H](CC(=O)c1ccc(=O)n(C)c1)c1ccc(Br)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.