pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.3	IUPAC digitized pKa	0	-1	COCC[NH+](CCOC)CC(=O)[O-]	COCCN(CCOC)CC(=O)[O-]	mol8531	COCCN(CCOC)CC(=O)O
1.89	IUPAC digitized pKa	1	0	COCC[NH+](CCOC)CC(=O)O	COCC[NH+](CCOC)CC(=O)[O-]	mol8531	COCCN(CCOC)CC(=O)O