Using O=P(Cl)(Cl)Cl, [O-][n+]1cc(F)c2nc(-c3c(Cl)cc(I)cc3Cl)sc2c1 to produce Fc1cnc(Cl)c2sc(-c3c(Cl)cc(I)cc3Cl)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.