Task: Please generate a molecule SMILES based on the text description.
Description: The molecule is the stable isotope of antimony with relative atomic mass 120.903818, 57.2 atom percent natural abundance and nuclear spin 5/2. It is an antimony(0) and an antimony atom.
Result: [121Sb]
Task: Please {#give me|create|generate!} a {#molecule |!}{SMILES__description} based on the {#text |!}description{# below|!}.
Description: {description#}
Result: {SMILES#}
antimony-121
The molecule is the stable isotope of antimony with relative atomic mass 120.903818, 57.2 atom percent natural abundance and nuclear spin 5/2. It is an antimony(0) and an antimony atom.