Using O=C(O)c1ccc(-c2nn(C(=O)c3c(Cl)cccc3C(F)(F)F)c3cccc(F)c23)cc1O to produce O=C([O-])c1ccc(-c2nn(C(=O)c3c(Cl)cccc3C(F)(F)F)c3cccc(F)c23)cc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.