pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.93	IUPAC digitized pKa	0	-1	O=C(O)/C=C\c1ccccc1	O=C([O-])/C=C\c1ccccc1	mol10840	O=C(O)/C=C\c1ccccc1
3.88	Datawarrior	0	-1	O=C(O)/C=C\c1ccccc1	O=C([O-])/C=C\c1ccccc1	mol10840	O=C(O)/C=C\c1ccccc1
3.88000011444092	QSARToolbox	0	-1	O=C(O)/C=C\c1ccccc1	O=C([O-])/C=C\c1ccccc1	mol10840	O=C(O)/C=C\c1ccccc1
4.19999980926514	QSARToolbox	0	-1	O=C(O)/C=C\c1ccccc1	O=C([O-])/C=C\c1ccccc1	mol10840	O=C(O)/C=C\c1ccccc1