[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an organic heteroheptacyclic compound, an epoxide, a gamma-lactam and a diterpenoid. It has a role as an antispermatogenic agent and a plant metabolite."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C@@][C@@H1][Branch1][Ring2][O][Ring1][Ring1][C@H1][C@@][Branch1][Ring2][O][Ring1][Ring1][C@][Branch2][Ring1][#C][C][C][C][=C][Branch2][Ring1][C][C@@H1][Ring1][=Branch1][C][C@H1][C@][Ring1][O][Branch1][Branch1][C@@H1][Ring1][S][O][O][Ring1][Branch1][C][O][C][Ring1][N][=O][C]"}]