::Rule_names << def jasms_2002_2_e2_bprime_heterocyclic_loss(only_uniqs: true, fragment_adduct_state: :as_published)
        fragment_sets = []
        fragment = lambda do |*arr|
          # duplicate
          (nmol, (nitrogen, ring_carbon, alcohol_carbon, alcohol_oxygen)) = self.dup_molecule(arr)