pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.62	OCHEM	0	-1	O=C(O)CN=C=S,O=C([O-])C[NH+]=C=S	O=C([O-])CN=C=S	mol31743	O=C(O)CN=C=S