pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.5	Datawarrior	0	-1	CCCC/C=[N+](\[O-])O	CCCCC=[N+]([O-])[O-]	mol12489	CCCC/C=[N+](\[O-])O