pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.75	IUPAC digitized pKa	0	-1	C[NH+](C)c1ccc(C=C(NC(=O)c2ccccc2)C(=O)[O-])cc1	CN(C)c1ccc(C=C(NC(=O)c2ccccc2)C(=O)[O-])cc1	mol12220	CN(C)c1ccc(C=C(NC(=O)c2ccccc2)C(=O)O)cc1