pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.66	IUPAC digitized pKa	1	0	Nc1ccc2ccc([NH3+])cc2c1	Nc1ccc2ccc(N)cc2c1	mol3540	Nc1ccc2ccc(N)cc2c1