pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.94	IUPAC digitized pKa	0	-1	[NH3+]CCS(=O)(=O)CCC(=O)[O-]	NCCS(=O)(=O)CCC(=O)[O-]	mol8481	NCCS(=O)(=O)CCC(=O)O