pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.53	IUPAC digitized pKa	1	0	COc1cc([NH3+])cccc1=O	COc1cc(N)cccc1=O	mol6325	COc1cc(N)cccc1=O