[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a chemical compound of antimony and selenium. Selenium is a nonmetal element with the atomic number 34 and the chemical symbol Se. Selenium rarely occurs in its elemental state in nature and is usually found in sulfide ores such as pyrite, partially replacing the sulfur in the ore matrix. It may also be found in silver, copper, lead, and nickel minerals. Though selenium salts are toxic in large amounts, trace amounts of the element are necessary for cellular function in most animals, forming the active center of the enzymes glutathione peroxidase, thioredoxin reductase, and three known deiodinase enzymes. 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, L620)"}, {"from": "gpt", "value": "[Se].[Se].[Se].[Sb].[Sb]"}]