pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.47	Caine	0	-1	CC(=O)C1C(=O)CCCC1=O	CC(=O)[C-]1C(=O)CCCC1=O	mol2735	CC(=O)C1C(=O)CCCC1=O