Using COC(=O)c1cc(Nc2ccc(F)cc2)c(Nc2ccc(F)cc2)cc1C(=O)OC to produce O=C(O)c1cc(Nc2ccc(F)cc2)c(Nc2ccc(F)cc2)cc1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.