Using O=C([O-])[O-], Cc1ccccc1C(CC(=O)c1ccc(=O)[nH]c1)c1ccc(Br)cc1F to produce Cc1ccccc1C(CC(=O)c1ccc(=O)n(C)c1)c1ccc(Br)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.