[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a divalent inorganic anion obtained by removal of two protons from silicic acid. It is a silicate ion and a divalent inorganic anion. It is a conjugate base of a trihydrogensilicate(1-). It is a conjugate acid of a hydrogensilicate(3-)."}, {"from": "gpt", "value": "[O][Si][Branch1][C][O][Branch1][C][O-1][O-1]"}]