pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.25	IUPAC digitized pKa	0	-1	O=C([O-])C#CC[NH+]1CCCC1	O=C([O-])C#CCN1CCCC1	mol8581	O=C(O)C#CCN1CCCC1
1.76	IUPAC digitized pKa	1	0	O=C(O)C#CC[NH+]1CCCC1	O=C([O-])C#CC[NH+]1CCCC1	mol8581	O=C(O)C#CCN1CCCC1