pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.44	IUPAC digitized pKa	0	-1	O=[N+]([O-])C(COCc1ccccc1)[N+](=O)[O-]	O=[N+]([O-])[C-](COCc1ccccc1)[N+](=O)[O-]	mol11034	O=[N+]([O-])C(COCc1ccccc1)[N+](=O)[O-]