pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.75	IUPAC digitized pKa	1	0	[NH3+]NC(=O)CNC(=O)OCc1ccccc1	NNC(=O)CNC(=O)OCc1ccccc1	mol8817	NNC(=O)CNC(=O)OCc1ccccc1