[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an iron coordination entity."}, {"from": "gpt", "value": "[C][=C][C][=N][C][=C][Ring1][=Branch1].[C][=C][C][=N][C][=C][Ring1][=Branch1].[C][=C][C][=N][C][=C][Ring1][=Branch1].[C][=C][C][=N][C][=C][Ring1][=Branch1].[C][=C][C][=N][C][=C][Ring1][=Branch1].[C][=C][C][=N][C][=C][Ring1][=Branch1].[Fe+2]"}]