pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.79	IUPAC digitized pKa	0	-1	N#CCNc1c(N)nc[nH]c1=O	N#CCNc1c(N)nc[n-]c1=O	mol9715	N#CCNc1c(N)nc[nH]c1=O