[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a non-proteinogenic alpha-amino acid. It has a role as a neurotoxin."}, {"from": "gpt", "value": "[C][=C][Branch1][#Branch1][O][N][C][Ring1][Branch1][=O][C][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}]