pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.84	Datawarrior	0	-1	[NH3+]C/C=C\C(=O)[O-]	NC/C=C\C(=O)[O-]	mol15985	NC/C=C\C(=O)O
3.53	Datawarrior	1	0	[NH3+]C/C=C\C(=O)O	[NH3+]C/C=C\C(=O)[O-]	mol15985	NC/C=C\C(=O)O