Task: Please create a description for a molecule.
Molecule SMILES: [NH3+][C@@H](CC[Se]C[C@H]([NH3+])C(=O)[O-])C(=O)[O-]
Constraint: Answer the question with full sentences.
Result: The molecule is an amino acid zwitterion arising from transfer of two protons from the carboxy to the amino groups of L-selenocystathionine; major species at pH 7.3. It is a tautomer of a L-selenocystathionine.
Task: Please create a {#text |!}description for a molecule{# based on its representation|!}.
{#Molecule |!}{SMILES__description}: {SMILES#}
Constraint: Answer the question with {#full|complete!} sentences.
Result: {description#}
[NH3+][C@@H](CC[Se]C[C@H]([NH3+])C(=O)[O-])C(=O)[O-]
(2S)-2-azaniumyl-4-[(2R)-2-azaniumyl-2-carboxylatoethyl]selanylbutanoate
The molecule is an amino acid zwitterion arising from transfer of two protons from the carboxy to the amino groups of L-selenocystathionine; major species at pH 7.3. It is a tautomer of a L-selenocystathionine.