code: def name(self):
          
          poss_deflist = sorted(
              self.bulk_structure.get_sites_in_sphere(self.site.coords, 2, include_index=True), key=lambda x: x[1])
          defindex = poss_deflist[0][2]
          return "Sub_{}_on_{}_mult{}".format(self.site.specie, self.bulk_structure[defindex].specie, self.multiplicity)
docs: Returns a name for this defect