Using [O-][Cl+][O-], O=CCc1c(Cl)ccc(NCC(F)(F)c2ccccc2)c1F to produce O=C(O)Cc1c(Cl)ccc(NCC(F)(F)c2ccccc2)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.