[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a tetracyclic triterpenoid isolated from Aglaia abbreviata. It has a role as a plant metabolite. It is a tetracyclic triterpenoid, an acetate ester and a gamma-lactone."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O][C@@H1][C][C][C@@][Branch2][Ring2][P][C@H1][C][C][C@@H1][C@H1][Branch2][Ring1][N][C][C][C@][Ring1][Branch1][Branch2][Ring1][Ring1][C@@][Ring1][=Branch2][Branch1][=N][C][C][C@H1][Ring1][=N][C][Ring1][P][Branch1][C][C][C][C][C][C@@][Branch1][#Branch2][C][C][C][=Branch1][C][=O][O][Ring1][=Branch1][C][C]"}]