[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][=C][C][C][C][=C][Ring1][Branch2].[C][C][C][=C][C][C][C][=C][Ring1][Branch2].[Ni]"}, {"from": "gpt", "value": "The molecule appears as yellow crystals or yellowish green solid. "}]