This question is about the hormone testosterone. The structure has three circled functional groups: Functional group 1 (a C=O attached to a ring carbon, i.e. on the cyclohexenone ring), Functional group 2 (the C=C double bond in the same ring) and Functional group 3 (an –OH attached to a tertiary-looking carbon on the five-membered ring side). Give the name of each of the three circled functional groups.