pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.1	IUPAC digitized pKa	1	0	COn1c(C)cc(C)[nH+]c1=O	COn1c(C)cc(C)nc1=O	mol7359	COn1c(C)cc(C)nc1=O