pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.0	IUPAC digitized pKa	0	-1	CCCCSP(=O)(O)O	""	mol9294	CCCCSP(=O)(O)O
5.5	IUPAC digitized pKa	-1	-2	""	""	mol9294	CCCCSP(=O)(O)O