pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.15	Caine	0	-1	O=C1CCCC(=O)C1C(=O)C1CC1	O=C1CCCC(=O)[C-]1C(=O)C1CC1	mol2703	O=C1CCCC(=O)C1C(=O)C1CC1