[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a polyether that is tetraethylene glycol in which the terminal hydroxy hydrogens are replaced by methyl and trimethylsilyl groups. It is a silyl ether and a polyether. It is functionally related to a tetraethylene glycol."}, {"from": "gpt", "value": "[C][O][C][C][O][C][C][O][C][C][O][C][C][O][Si][Branch1][C][C][Branch1][C][C][C]"}]