All

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 D02 Organic Chemicals D009930 +
  D02.078 Amidines D000578 +
   D02.078.370 Guanidines D006146 +
    D02.078.370.649 Nitrosoguanidines D009604 +
      D02.078.370.649.400 Methylnitronitrosoguanidine D008769 
 D02 Organic Chemicals D009930 +
  D02.654 Nitroso Compounds D009603 +
   D02.654.567 Nitrosoguanidines D009604 +
     D02.654.567.400 Methylnitronitrosoguanidine D008769