Using CCOC(=O)c1cn(-c2cccc(Br)c2)nc1N, OB(O)c1ccccc1OC(F)(F)F to produce CCOC(=O)c1cn(-c2cccc(-c3ccccc3OC(F)(F)F)c2)nc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.