pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.3	Datawarrior	0	-1	NC(=O)[C@H](CCC(=O)O)NC=O	NC(=O)[C@H](CCC(=O)[O-])NC=O	mol12869	NC(=O)C(CCC(=O)O)NC=O
4.3000002	OCHEM	0	-1	NC(=O)[C@H](CCC(=O)O)NC=O	NC(=O)[C@H](CCC(=O)[O-])NC=O	mol12869	NC(=O)C(CCC(=O)O)NC=O