pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.75	IUPAC digitized pKa	1	0	CCn1cc(C)c[nH+]c1=O	CCn1cc(C)cnc1=O	mol7442	CCn1cc(C)cnc1=O