[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a steroid. It derives from a hydride of a stigmastane."}, {"from": "gpt", "value": "[C][C][C][Branch2][Ring2][O][C][C][C][Branch1][C][C][C][C][C][C][C][Ring1][Branch1][Branch2][Ring1][#Branch2][C][C][C][C][Ring1][=Branch1][=C][C][C][C][Ring1][=Branch1][Branch1][O][C][C][C][Branch1][Branch1][C][Ring1][=Branch1][C][O][C][C][C][Branch1][C][C][C]"}]