All

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 D02 Organic Chemicals D009930 +
  D02.691 Organometallic Compounds D009942 +
   D02.691.825 Organotechnetium Compounds D015609 +
    D02.691.825.775 Technetium Tc 99m Mertiatide D017263 
 D12 Amino Acids, Peptides, and Proteins D000602 +
  D12.644 Peptides D010455 +
   D12.644.456 Oligopeptides D009842 +
    D12.644.456.805 Technetium Tc 99m Mertiatide D017263