[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a carbene that is derived from 1H-indene. It derives from a hydride of a 1H-indene."}, {"from": "gpt", "value": "[C][=C][C][=C][C][=C][=C][Ring1][Branch1][C][=C][Ring1][=Branch2]"}]