[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a chemical compound of cadmium that occurs naturally as the mineral otavite. Cadmium is a transition metal and chemical element with the symbol Cd and atomic number 48. It is found naturally in the earth's crust, though rarely on it's own. (L6, L456)"}, {"from": "gpt", "value": "[C][=Branch1][C][=O][Branch1][C][O-1][O-1].[Cd+2]"}]