pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.6	IUPAC digitized pKa	0	-1	CC(=O)OCc1cc(=O)c(O)c([N+](=O)[O-])o1	CC(=O)OCc1cc(=O)c([O-])c([N+](=O)[O-])o1	mol10589	CC(=O)OCc1cc(=O)c(O)c([N+](=O)[O-])o1