#fullerene  a form of carbon having a large spheroidal molecule consisting of an empty cage of sixty or more carbon atoms
  supertype:  #carbon__C__atomic_number_6  an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds
  subtype:  #buckminsterfullerene__buckyball  the first known example of a fullerene

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