pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.1	IUPAC digitized pKa	1	0	Cc1cn2cccnc2[nH+]1,Cc1cn2ccc[nH+]c2n1	Cc1cn2cccnc2n1	mol8009	Cc1cn2cccnc2n1