All

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 D03 Heterocyclic Compounds D006571 +
  D03.383 Heterocyclic Compounds, 1-Ring D006573 +
   D03.383.725 Pyridines D011725 +
    D03.383.725.495 Naphthylvinylpyridine D009286 
 D04 Polycyclic Hydrocarbons D011083 +
  D04.615 Polycyclic Hydrocarbons, Aromatic D011084 +
   D04.615.638 Naphthalenes D009281 +
    D04.615.638.900 Naphthylvinylpyridine D009286