Using CCC(=O)O, FC(F)(F)c1cc2ccc(Cl)c(CBr)c2nc1C(F)(F)F to produce O=C(O)c1c(Cl)ccc2cc(C(F)(F)F)c(C(F)(F)F)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.