All

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 D02 Organic Chemicals D009930 +
  D02.455 Hydrocarbons D006838 +
   D02.455.849 Terpenes D013729 +
    D02.455.849.291 Diterpenes D004224 +
     D02.455.849.291.400 Gibberellins D005875 
 D11 Growth Substances, Pigments, and Vitamins D006134 +
  D11.303 Growth Substances D006133 +
   D11.303.760 Plant Growth Regulators D010937 +
    D11.303.760.408 Gibberellins D005875