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Here the longest C-chain containing functional groups has got 6 C-atom.So stemname is hex.
The compound contains both C=C and C≡C in its chain.So inorder of prference C=C is to be given lowest locant ( here-1) but the name should end with 'en' followed by 'yne' with respectve locant (1-en-5yne to be added as suffix).Hence the numbering is to start from right here.
The prefix name of Cl,FandNO2 will be added with respective locants in alphabatical order before the stem name .
And the IUPAC name will be
4-chloro-3-fluoro-4-nitrohex-1-en-5-yne
