Using O=C(CC(=O)C(F)(F)F)c1ccc(Br)cc1, OB(O)c1ccco1 to produce O=C(CC(=O)C(F)(F)F)c1ccc(-c2ccco2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.