Based on the SMILES representation [4He], the molecule can be described by:
The molecule is the stable isotope of helium with relative atomic mass 4.002603. The most abundant (99.99 atom percent) isotope of naturally occurring helium. It contains an alpha-particle.
Based on the {SMILES__description} {#representation |!}{SMILES#}, the molecule can be described {#by|as!}:
{description#}
helium-4
The molecule is the stable isotope of helium with relative atomic mass 4.002603. The most abundant (99.99 atom percent) isotope of naturally occurring helium. It contains an alpha-particle.