pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.7	IUPAC digitized pKa	1	0	CCCn1ccc[nH+]c1=O	CCCn1cccnc1=O	mol7376	CCCn1cccnc1=O