Answer
The substituents are:
- 5 methyls.
Work Step by Step
1. Identify the parent chain:
In this case, the parent chain is the horizontal line of carbons in the middle.
2. Check the atoms, or groups, that are left:
- 5 separated carbons. (CH3)
3. Give they the proper name:
- Single carbons with 3 hydrogens are called "methyl" as substituents.