pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.2	IUPAC digitized pKa	-1	-2	CSC[C@H](NC(=O)CC[C@H]([NH3+])C(=O)[O-])C(=O)NCC(=O)[O-]	CSC[C@H](NC(=O)CC[C@H](N)C(=O)[O-])C(=O)NCC(=O)[O-]	mol5360	CSC[C@H](NC(=O)CC[C@H](N)C(=O)O)C(=O)NCC(=O)O