pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.0	Datawarrior	1	0	C[n+]1cnc2nc[nH]c2c1O	C[n+]1cnc2nc[nH]c2c1[O-]	mol13990	C[n+]1cnc2nc[nH]c2c1O