Select the correct molecular formula for the given compounds:
  
 
Answer variants:
\(CH_3-(CH_2)_5-OH\)
\(CH_3-(CO)_3-Cl\)
\(CH_3-(CH_2)_5C\) \(\equiv CH\)
\(CH_2=CH_2\)
  
1. Oct-1-yne  -
 
2. Ethene -