[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][Hg].[O]"}, {"from": "gpt", "value": "The molecule appears as a fine white to cream crystalline solid. Toxic by ingestion, inhalation or skin absorption. Denser than water."}]