[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a tetracyclic triterpenoid isolated from the stems of Aglaia abbreviata. It has a role as a plant metabolite. It is a tetracyclic triterpenoid, a secondary alcohol and a methyl ketone."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][C@H1][C][C][C@@][Branch2][Ring2][Ring2][C@@H1][Ring1][Branch1][C][C][C@H1][C@][Ring1][=Branch1][Branch2][Ring1][#Branch1][C][C][C@@H1][C@@][Ring1][=Branch1][Branch1][=C][C][C][C@H1][Branch1][Branch2][C][Ring1][=Branch1][Branch1][C][C][C][O][C][C][C]"}]