pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
12.02	IUPAC digitized pKa	1	0	CCN=c1[nH+]cccn1C,CC[NH+]=c1ncccn1C	CCN=c1ncccn1C	mol7447	CCN=c1ncccn1C