pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.1	IUPAC digitized pKa	0	-1	N#Cc1cc([N+](=O)[O-])ccc1O	N#Cc1cc([N+](=O)[O-])ccc1[O-]	mol10039	N#Cc1cc([N+](=O)[O-])ccc1O