[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][=C][C@@H1][Branch1][#Branch2][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][O][O].[C][Branch1][=C][C@@H1][Branch1][#Branch2][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][O][O].[Ca+2]"}, {"from": "gpt", "value": "The molecule is a calcium salt of threnoic acid and a novel drug developed for the treatment of osteoporosis and as a calcium supplement. It is found in dietary supplements as a source of L-threonate used in the treatment of calcium deficiency and prevention of osteoporosis. The most common form is calcium L-threonate, or (2R,3S)-2,3,4-trihydroxy butyric acid calcium. L-threonate is an active metabolite of vitamin C that mediates a stimulatory action on vitamin C uptake. Therapeutic efficacy of calcium threonate in reducing was studied and investigated due to the hypothesis that it may play a role in the mineralization process through its positive action on vitamin C."}]