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Select the correct IUPAC name for the given condensed structural formula:
  
 
Answer variants:
Lanthanide
Dimethyl
Pent-2-ene
Oct-1-yne
Non-1-yne
  
1. \(CH_3-(CH_2)_5C\) \(\equiv CH\) -
 
2. \(CH_3-(CH_2)_6C\) \(\equiv CH\) -