pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.47	IUPAC digitized pKa	0	-1	CSC(=N)c1nnn(C)c1N	CSC(=[N-])c1nnn(C)c1N	mol7646	CSC(=N)c1nnn(C)c1N