Using O=C([O-])[O-], O=c1[nH]c(=O)n(-c2cccc(C(F)(F)F)c2)cc1Br to produce Cn1c(=O)c(Br)cn(-c2cccc(C(F)(F)F)c2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.