[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a member of ferrocenes. It derives from a hydride of a ferrocene."}, {"from": "gpt", "value": "[C][C-1][CH1-1][CH1-1][CH1-1][CH1-1][Ring1][Branch1].[C][C][=C][C][=C][CH1-1][Ring1][Branch1].[Fe]"}]