Kidding?

First it follows a standard "steroid skeleton" ring structure,
4 rings where 3 are 6C rings, and one is a 5C ring.
(None of the rings are aromatic, unless when T is converted to estradiol and the A ring becomes aromatic.

While there are some double bonds in the testosterone molecule,
it's mostly single bonds. Covalent bonds... fuck it.
Google it.

And the enanthate ester is attached at the C17 carbon (in a beta configuration)
It has to be removed for the testosterone to become active.