pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.02	OCHEM	0	-1	O=[N+]([O-])c1ccc2c(c1)CCN2c1nn[nH]n1	O=[N+]([O-])c1ccc2c(c1)CCN2c1nn[n-]n1	mol20339	O=[N+]([O-])c1ccc2c(c1)CCN2c1nn[nH]n1