Using Cc1c(Cl)nc2cc(F)cc(F)c2c1Cl, OB(O)c1ccc(C(F)(F)F)nc1 to produce Cc1c(-c2ccc(C(F)(F)F)nc2)nc2cc(F)cc(F)c2c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.