[{"from": "human", "value": "Provide a brief overview of this molecule. [O][=As][=Branch1][C][=O][O][As][=Branch1][C][=O][=O]"}, {"from": "gpt", "value": "The molecule is a commerical oxide of arsenic frequently used in the production of other arsenic compounds. It dissolves readily in water to form arsenic acid and decomposes into oxygen and arsenic trioxide when heated. Arsenic pentoxide is used in the manufacturing of arsenates, weed killer, metal adhesives, insecticides, fungicides, wood preservatives, and colored gases, and in printing and dyeing. Arsenic is a chemical element that has the symbol As and atomic number 33. It is a poisonous metalloid that has many allotropic forms: yellow (molecular non-metallic) and several black and grey forms (metalloids) are a few that are seen. Three metalloidal forms of arsenic with different crystal structures are found free in nature (the minerals arsenopyrite and the much rarer arsenolamprite and pararsenolamprite), but it is more commonly found as a compound with other elements. (T3, L382)"}]