2a,3a-epithio-17a-methyl-5a-androstan-17b-ol is an AI (Aromatase Inhibitor), whereas, Humaguno is a PS/PH.
I would advise you post this question in the steroid section. I know this isn't technically a steroid question, but the chemists who can read and interpret nonemclatures hang out in the steroid section. You would get much more in depth and clear answers from the chemists here. My knowledge on this stuff is questionable.
Follow the yellow brick road to the Steroid Forum, and good luck!