Using OB(O)c1cccc(C(F)(F)F)c1, CCOC(=O)COC(=O)N1CCN(c2ccc(Br)nc2)CC1 to produce CCOC(=O)COC(=O)N1CCN(c2ccc(-c3cccc(C(F)(F)F)c3)nc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.