pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
-0.29	IUPAC digitized pKa	1	0	Cn1[nH+]cc(=O)c2ccccc21	Cn1ncc(=O)c2ccccc21	mol7797	Cn1ncc(=O)c2ccccc21