The correct IUPAC name is 4-chloro-2,4-dimethyldecane.
Explanation:
The main carbon chain form the molecule does not have 8 carbons it have 10 carbons. After you identified the maine carbon chain you list the substituents in alphabetical order (you do not take in to account multiplicative prefixes as "di-").
The name of the compound is 4-chloro-2,4-dimethyldecane and you my find the chemical structural in the attached picture.
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IUPAC names or organic compounds
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