pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.47	IUPAC digitized pKa	1	0	CCC1=[NH+]NCC1,CCC1=N[NH2+]CC1	CCC1=NNCC1	mol6898	CCC1=NNCC1