[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an organic heterotetracyclic compound that is 2,3,3a,4,5,6-hexahydropyrazino[3,2,1-jk]carbazole carrying a cyclohexyl substituent at position 8."}, {"from": "gpt", "value": "[C][C][C][C][Branch1][Branch1][C][C][Ring1][=Branch1][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][C][C][N][C][C][Ring1][=Branch1][=C][Ring1][O][C][C][C][Ring1][=Branch1]"}]