pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.19999980926514	QSARToolbox	0	-1	O=C(O)N1CCNC1=O	O=C([O-])N1CCNC1=O	mol34305	O=C(O)N1CCNC1=O