Using Cc1nn(C)cc1CN1CCN(c2nccnc2Cl)CC1, OB(O)c1ccccc1F to produce Cc1nn(C)cc1CN1CCN(c2nccnc2-c2ccccc2F)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.