In short, you trusted a statement from a probabilistic next-word-predictor when you could have simply searched for the base name: Androsta-4,16-dien-3-one and dienedione to realize that you fucked up. Badly.
Androsta-4,16-dien-3-one (androstadienone, CAS 4075-07-4) is a nonandrogenic 16-androstene steroid found in male sweat, semen, and skin. It acts as a potential human pheromone, influencing mood, physiological arousal, and, in some studies, enhancing feelings of submissiveness or attraction in women. It is derived from testosterone.
Dienedione (estra-4,9-diene-3,17-dione) is a synthetic anabolic-androgenic steroid (AAS) and a prohormone for dienolone, acting as a precursor that converts into the more active steroid. Though never medically used, it's a potent substance, banned in sports by WADA, and classified as a Schedule III controlled substance in the U.S., meaning it's illegal for over-the-counter sale as a dietary supplement.
Clearly they are not the same compound despite how ChatGPT told you.
This is supposed to be a harm reduction forum and the single best method of reducing harm is to verify your information from multiple reliable sources rather than take the word of some rando on a forum or an AI generative tool.