pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.4	OCHEM	0	-1	N[C@H]1CONC1=O	N[C@H]1CO[N-]C1=O	mol31760	N[C@H]1CONC1=O