Using O=Cc1ccc2c(c1)c(Br)nn2Cc1ccc(Cl)cc1C(F)(F)F, OB(O)c1ccc(F)cc1 to produce O=Cc1ccc2c(c1)c(-c1ccc(F)cc1)nn2Cc1ccc(Cl)cc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.