pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
0.75	IUPAC digitized pKa	1	0	COc1cncc[nH+]1,COc1c[nH+]ccn1	COc1cnccn1	mol3991	COc1cnccn1