pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.51	IUPAC digitized pKa	-2	-3	O=C1C(S(=O)(=O)[O-])=Cc2cc(S(=O)(=O)[O-])ccc2C1=NO	O=C1C(S(=O)(=O)[O-])=Cc2cc(S(=O)(=O)[O-])ccc2C1=N[O-]	mol11447	O=C1C(S(=O)(=O)O)=Cc2cc(S(=O)(=O)O)ccc2C1=NO