Using Cn1cc(CN2CCN(c3nccnc3Cl)CC2)cn1, OB(O)c1cccc(F)c1F to produce Cn1cc(CN2CCN(c3nccnc3-c3cccc(F)c3F)CC2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.