pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
13.9	IUPAC digitized pKa	1	0	CNC(=[NH+]C)N(C)C	CN=C(NC)N(C)C	mol5792	CN=C(NC)N(C)C