[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][#Branch2][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][NH3+1][Se]"}, {"from": "gpt", "value": "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."}]