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Find the correct name and condensed molecular formula for the given group of compounds:
  
 
Answer variants:
\(CH_5O_9\)
\(C_5H_{12}O\)
Ethanal
1- Methoxybutane
Krypton
Nihonium
\(C_2H_4O\)
  
1. Ethers 
 
Name of the alkyne        Condensed formula
 
     -    
 
2. Aldehyde
 
Name of the alkyne        Condensed formula
 
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