[{"from": "human", "value": "What can you tell me about this molecule? [O][Sb][=Branch1][C][=O][Branch1][C][O-1][O][Sb][=Branch1][C][=O][Branch1][C][O][O-1].[K+1].[K+1]"}, {"from": "gpt", "value": "The molecule is a chemical compound of antimony. Antimony is a metallic element with the chemical symbol Sb and atomic number 51. Small amounts of antimony are found in the earth's crust. (L741, L808)."}]