pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.99	OCHEM	-1	-2	C[C@H](C(=O)O)S(=O)(=O)[O-],C[C@H](C(=O)[O-])S(=O)(=O)O	C[C@H](C(=O)[O-])S(=O)(=O)[O-]	mol31716	C[C@H](C(=O)O)S(=O)(=O)O