pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.94	IUPAC digitized pKa	0	-1	C[C@@H](CC([N+](=O)[O-])[N+](=O)[O-])[N+](=O)[O-]	C[C@@H](C[C-]([N+](=O)[O-])[N+](=O)[O-])[N+](=O)[O-]	mol9221	CC(CC([N+](=O)[O-])[N+](=O)[O-])[N+](=O)[O-]