All

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 D01 Inorganic Chemicals D007287 +
  D01.029 Acids D000143 +
   D01.029.260 Acids, Noncarboxylic D000148 +
    D01.029.260.877 Sulfur Acids D013456 +
     D01.029.260.877.800 Sulfuric Acids D013464 +
      D01.029.260.877.800.900 Tetrathionic Acid D013776 
 D01 Inorganic Chemicals D007287 +
  D01.875 Sulfur Compounds D013457 +
   D01.875.800 Sulfur Acids D013456 +
    D01.875.800.800 Sulfuric Acids D013464 +
     D01.875.800.800.900 Tetrathionic Acid D013776