pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
10.91	IUPAC digitized pKa	1	0	CCCCn1cccnc1=[NH2+],CCCCn1ccc[nH+]c1=N	CCCCn1cccnc1=N	mol4116	CCCCn1cccnc1=N