[chemical substances]
Count: 378c;28s
   compounds
  Count: 328c;25s
     Class thioacetals
    Count: 4c
       Class monothioacetals [R2C(OR')(SR') (R'≠H)]
      Count: 1c
         Class monothioketals [R2C(OR)(SR) (R≠H)]
        Count: -