Using [O-][n+]1cc(F)c2nn(-c3c(F)cccc3Cl)cc2c1, O=P(Cl)(Cl)Cl to produce Fc1cccc(Cl)c1-n1cc2c(Cl)ncc(F)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.