pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.93	IUPAC digitized pKa	1	0	CC(=O)NC(=[NH2+])NC(C)=O	CC(=O)NC(=N)NC(C)=O	mol8799	CC(=O)NC(=N)NC(C)=O