pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.42	IUPAC digitized pKa	1	0	Cn1ccc(=[NH+]S(C)(=O)=O)cc1	Cn1ccc(=NS(C)(=O)=O)cc1	mol3669	Cn1ccc(=NS(C)(=O)=O)cc1