[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a trimethylbenzene carrying methyl groups at positions 1, 2 and 4. It has a role as a neurotoxin."}, {"from": "gpt", "value": "[C][C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C]"}]