pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.57	IUPAC digitized pKa	1	0	Cc1c[nH+]c(=O)n(C)c1	Cc1cnc(=O)n(C)c1	mol7331	Cc1cnc(=O)n(C)c1