pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.04	IUPAC digitized pKa	1	0	c1ccc(C[NH2+]c2ccccc2)cc1	c1ccc(CNc2ccccc2)cc1	mol1643	c1ccc(CNc2ccccc2)cc1