[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is ferrocene substituted on one of the cyclopentadienyl rings by a vinyl group. It contains a vinyl group."}, {"from": "gpt", "value": "[C][=C][C-1][CH1-1][CH1-1][CH1-1][CH1-1][Ring1][Branch1].[CH1-1][C][=C][C][=C][Ring1][Branch1].[Fe]"}]