pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.2	OCHEM	0	-1	CCOC(=O)c1ccccc1S(=O)(=O)NC(=O)Nc1nc(Cl)cc(OC)n1	CCOC(=O)c1ccccc1S(=O)(=O)[N-]C(=O)Nc1nc(Cl)cc(OC)n1	mol644	CCOC(=O)c1ccccc1S(=O)(=O)NC(=O)Nc1nc(Cl)cc(OC)n1