pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.6	AttenGpKa training set	-1	-2	[NH3+][C@H](COP(=O)([O-])O)C(=O)[O-]	[NH3+][C@H](COP(=O)([O-])[O-])C(=O)[O-]	mol28930	N[C@H](COP(=O)(O)O)C(=O)O