pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.63000011444092	QSARToolbox	-1	-2	O=C([O-])CC[NH+](CC(=O)[O-])[N+](=O)[O-]	O=C([O-])CCN(CC(=O)[O-])[N+](=O)[O-]	mol33959	O=C(O)CCN(CC(=O)O)[N+](=O)[O-]