pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
11.43	Datawarrior	-1	-2	CC(=NO)C(=O)[O-]	CC(=N[O-])C(=O)[O-]	mol15998	CC(=NO)C(=O)O