[{"from": "human", "value": "Provide a description of this molecule. [O-1][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[Zn+2]"}, {"from": "gpt", "value": "The molecule is the inorganic compound with the formula ZnSO4 and historically known as \"white vitriol\". It is on the World Health Organization's List of Essential Medicines, a list of the most important medication needed in a basic health system."}]