pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.9	IUPAC digitized pKa	0	-1	Cn1cnc2nc[nH]c(=S)c21	Cn1cnc2nc[n-]c(=S)c21	mol9713	Cn1cnc2nc[nH]c(=S)c21