pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
12.4	IUPAC digitized pKa	0	-1	O=[N+]([O-])C(F)F	O=[N+]([O-])[C-](F)F	mol8917	O=[N+]([O-])C(F)F