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2-heksuna
3-heksuna
4-metil-1-pentuna
3-metil-1-pentuna
CH3-C≡C-CH2-CH2-CH3
CH3-CH2-C≡C-CH2-CH3
CH≡C-CH-CH2-CH3
CH3
CH≡C-CH2-CH-CH2-CH4
CH3