pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.1	IUPAC digitized pKa	1	0	CCn1cnc2c(N)[nH+]cnc21,CCn1c[nH+]c2c(N)ncnc21,CCn1cnc2c(N)nc[nH+]c21,CCn1cnc2c([NH3+])ncnc21	CCn1cnc2c(N)ncnc21	mol8248	CCn1cnc2c(N)ncnc21