[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][C-1][CH1-1][CH1-1][CH1-1][CH1-1][Ring1][Branch1].[CH1-1][C][=C][C][=C][Ring1][Branch1].[Fe]"}, {"from": "gpt", "value": "The molecule is ferrocene substituted on one of the cyclopentadienyl rings by a vinyl group. It contains a vinyl group."}]