pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
10.19	IUPAC digitized pKa	1	0	c1cc2c(cn1)CCC[NH2+]2,c1cc2c(c[nH+]1)CCCN2	c1cc2c(cn1)CCCN2	mol7826	c1cc2c(cn1)CCCN2