pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.9300000667572	QSARToolbox	0	-1	O=C(O)[C@@H]1C=C[C@@H](C(=O)O)CC1	O=C([O-])[C@@H]1C=C[C@@H](C(=O)O)CC1	mol36342	O=C(O)[C@@H]1C=C[C@@H](C(=O)O)CC1