IUPAC nomenclature assistance request

AI Thread Summary
The discussion revolves around a student's challenge with IUPAC nomenclature for a specific molecule. The student initially proposed the name "4-sec-butyl-1,1-dimethyldecane" but later considered "4-sec-butyl-1,1-dimethylcyclodecane" after realizing the structure is a cyclodecane. They confirmed the presence of a sec-butyl group, two methyl groups, and a total of ten carbon atoms. Despite checking spelling and punctuation, the student remains uncertain about the correct nomenclature and seeks guidance on potential errors. The focus is on clarifying the correct naming conventions for the molecule in question.
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Homework Statement
My professor set us an online quiz in IUPAC nomenclature. I managed to get all of the problems correct, except for one. The graphic shows the molecule and my attempt at a solution.

http://img67.imageshack.us/img67/8673/14ne9.gif

The attempt at a solution
If you can't read what I typed in, it is:

"4-sec-butyl-1,1-dimethyldecane"

On my first attempt at this quiz, I tried using "s-butyl" instead of "sec-butyl" but I still missed it. My professor told us it wouldn't matter whether we used s-butyl or sec-butyl, but I decided to try both just to be sure. I have also double-checked my spelling and punctuation, but it all seems to be correct.

I'm certain that the group on the left is s-butyl, there are two methyl groups so it is dimethyl, and there are 10 carbon atoms in the ring structure. Plus, I think I have the numbering correct (I did have some trouble with that initially). Any hints on what I'm doing wrong would be appreciated!
 
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I think the only thing I noticed first was that it's a cyclodecane... so maybe you can try 4-sec-butyl-1,1-dimethylcyclodecane.
 
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