[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an organotin compound that consists of stannane in which three of the four hydrogens are substituted by methyl groups. It has a role as a neurotoxin. It derives from a hydride of a stannane."}, {"from": "gpt", "value": "[C][SnH1][Branch1][C][C][C]"}]