pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.12	IUPAC digitized pKa	1	0	O=C(NC1=[NH+]CCCN1)c1ccccc1	O=C(NC1=NCCCN1)c1ccccc1	mol7127	O=C(NC1=NCCCN1)c1ccccc1