[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an indole alkaloid that is sarpagan in which the methyl group attached to position 16 has been oxidised to the corresponding aldehyde. It has a role as a plant metabolite. It is an aldehyde, an organic heteropentacyclic compound and an indole alkaloid. It derives from a hydride of a sarpagan."}, {"from": "gpt", "value": "[C][/C][=C][/C][N][C@H1][C][C@@H1][\\-Ring1][=Branch1][C@H1][Branch2][Ring1][Ring2][C@@H1][Ring1][=Branch1][C][C][=C][Ring1][Branch2][N][C][=C][C][=C][C][=C][Ring1][=Branch2][Ring1][=Branch1][C][=O]"}]