Using FC(F)(F)c1ccc2c(Cl)ccnc2c1, O=C(OO)c1cccc(Cl)c1 to produce [O-][n+]1ccc(Cl)c2ccc(C(F)(F)F)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.