name this alkyne

ch3-ch2-ch2-ch3(c�ßCH)-CH2-CH2-CH2-CH3

is a heptyne but i just cant figure out the name . Ive tried 1-heptyne but its not the right answer :S
help?

4 answers

correction ch3-ch2-ch2-ch(c� triple bond CH)-CH2-CH2-CH2-CH3
ch3-ch2-ch2-ch(c� triple bond CH)-CH2-CH2-CH2-CH3

Doesn't make sense, do you mean

CH3-CH2-CH2-C(triple bond)C-CH2-CH2-CH2-CH3

9 carbon chain so a nonane derivative. The triple bond starts at C4 so

non-4-yne (or 4-nonyne)
I meant the triple bond is at the top of the 4 ch (left to right) . This is online homework so it says the parent chain is heptyne . So i don't know if the system is giving me a wrong hint
CH3CH2CH2CH( a c on top of the ch and a triple bond on top of the c)CH2CH2CH2CH3