Using CCc1c(OCc2ccc(F)cc2F)ncn(-c2cc(C(=O)OC)ccc2C)c1=O to produce CCc1c(OCc2ccc(F)cc2F)ncn(-c2cc(C(=O)O)ccc2C)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.