Nomenclature of hydrocarbons

We would like to give a correct name to this molecule. First the main chain is identified and the root is named. Then we give eventual double or triple bonds their location numbers in the main chain.

Then we look for the longest branch counted from where it is attached to the main chain. This branch will be numbered from its attachment. Don't forget its location on the main chain !

Then we look for the secondary branch to the precedent and we mark its location with respect to the primary branch.