[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a triterpene that is dammarane containing one double bond between the 20 and 21 positions, and another between the 24 and 25 positions. It is a triterpene and a steroid. It derives from a hydride of a dammarane."}, {"from": "gpt", "value": "[C][C][=Branch2][Ring2][S][=C][C][C][C][=Branch1][C][=C][C@H1][C][C][C@@][Branch2][Ring1][P][C@@H1][Ring1][Branch1][C][C][C@H1][C@][Ring1][=Branch1][Branch2][Ring1][Ring2][C][C][C@@H1][C@@][Ring1][=Branch1][Branch1][O][C][C][C][C][Ring1][=Branch1][Branch1][C][C][C][C][C][C][C]"}]