[{"from": "human", "value": "Describe this molecule. [C][C][=Branch1][C][=O][O-1].[C][C][=Branch1][C][=O][O-1].[O-1][As][=O].[O-1][As][=O].[O-1][As][=O].[O-1][As][=O].[O-1][As][=O].[O-1][As][=O].[Cu+2].[Cu+2].[Cu+2].[Cu+2]"}, {"from": "gpt", "value": "The molecule is a chemical compound of copper and arsenic better known as Paris Green. It was used as an insecticide and green pigment in some paints but has fallen out of use due to its toxicity. It may also be used in fireworks as a blue colorant. Copper is a chemical element with the symbol Cu and atomic number 29. Copper is an essential elements in plants and animals as it is required for the normal functioning of more than 30 enzymes. It occurs naturally throughout the environment in rocks, soil, water, and air. 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, L277, L278, L303)"}]