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Find the correct name and condensed molecular formula for the given group of compounds:
  
 
Answer variants:
Butanal
\(C_2H_6O\)
\(C_4H_8O\)
Moscovium
Methoxy methane
\(C_5H_5O_9Cl\)
Mercury
  
1. Ethers 
 
Name of the alkyne         Condensed formula
 
       -    
 
2. Aldehyde
 
Name of the alkyne        Condensed formula
 
       -