Using CC(=O)[O-], COC(=O)c1cnc(OCC(F)(F)F)c(CBr)c1 to produce COC(=O)c1cnc(OCC(F)(F)F)c(COC(C)=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.