pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.75	IUPAC digitized pKa	0	-1	O=C(O)C(=O)C=[S@@]1SCC=C1c1ccccc1	O=C([O-])C(=O)C=[S@@]1SCC=C1c1ccccc1	mol11688	O=C(O)C(=O)C=S1SCC=C1c1ccccc1