Using OB(O)c1ccc(F)cc1, NC(=O)C1CCN(c2c(Cl)cncc2Cl)CC1 to produce NC(=O)C1CCN(c2c(Cl)cncc2-c2ccc(F)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.