Based on the SMILES c1c#cc#cc#cc#cc#cc#cc#cc#cc#1, the molecule can be described as:
The molecule is an allotrope of carbon with molecular formula C18 existing as a ring of eighteen carbon atoms, connected by alternating triple and single bonds. It is an elemental carbon and a carbocyclic compound.
Based on the {SMILES__description} {#representation |!}{SMILES#}, the molecule can be described {#by|as!}:
{description#}
c1c#cc#cc#cc#cc#cc#cc#cc#cc#1
cyclooctadecanonayne
The molecule is an allotrope of carbon with molecular formula C18 existing as a ring of eighteen carbon atoms, connected by alternating triple and single bonds. It is an elemental carbon and a carbocyclic compound.