All

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 D04 Polycyclic Hydrocarbons D011083 +
  D04.808 Steroids D013256 +
   D04.808.054 Androstanes D000731 +
    D04.808.054.079 Androstenes D000736 +
     D04.808.054.079.129 Androstadienes D000730 +
      D04.808.054.079.129.782 Testolactone D013738 
 D04 Polycyclic Hydrocarbons D011083 +
  D04.808 Steroids D013256 +
   D04.808.496 Homosteroids D006718 +
    D04.808.496.699 Testolactone D013738