[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule appears as a white crystalline solid. Very corrosive to skin, eyes and mucous membranes. Corrosive to metal. Toxic by skin absorption and by ingestion."}, {"from": "gpt", "value": "[O][Se][=Branch1][C][=O][=Branch1][C][=O][O]"}]