[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a selenocysteinium that has L configuration. It is a conjugate acid of a L-selenocysteine. It is an enantiomer of a D-selenocysteinium."}, {"from": "gpt", "value": "[C][Branch1][#Branch2][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][NH3+1][Se]"}]