All

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 D02 Organic Chemicals D009930 +
  D02.455 Hydrocarbons D006838 +
   D02.455.326 Hydrocarbons, Acyclic D006839 +
    D02.455.326.146 Alkanes D000473 +
     D02.455.326.146.672 Nitroparaffins D009595 +
       D02.455.326.146.672.800 Tetranitromethane D013774 
 D02 Organic Chemicals D009930 +
  D02.640 Nitro Compounds D009574 +
   D02.640.720 Nitroparaffins D009595 +
     D02.640.720.800 Tetranitromethane D013774