IUPAC naming for a sidechain with double bond?

[krackers]

As shown in this picture.

How would you do the naming for a sidechain that has double bonds?

Or does the double bond take priority over the length of the chain?

 

[DrDu]

I think it's Methylenyl-

 

[aroc91]

Indeed, DrDu. Chemdraw confirms that it's 3,3-dimethyl-5-methyleneheptane.

 

[Ionization]

I think the name is 2-ethyl-4,4-dimethyl-1-hexene