Estrogen isn’t a molecule. It’s a class of feminizing hormones, the most prominent of which is estradiol. Others include estrone and estriol. Collectively, these are called estrogens.
The masculinizing analog for estrogen is androgen (a word you practically never hear*), which also refers to a class of hormones. In addition to being the most well-known of the androgens, testosterone might be the most famous hormone in the whole body**. Dihydrotestosterone is actually the most potent androgen. Androsterone and Androstenedione are (relatively weak) others.
*e.g. It’s such an androgen fest!
**Adrenaline is the only competitor that comes to mind.
This moment of pedantry was brought to you by TankieTanuki. 
Yes. 99.9% sure I wore girl jeans when I was first homeless. The pockets were kind of nice though still not like “man” pockets though. But they buttoned opposite and or had the metal tab that slid into the “cover up the gibblets” (very technical stuff here) staple. Have no idea what happened to them at this point. Was probably not thrilled about it at the time (because I was 18 and so far in the closet and wanted to take my time coming out plus I like to just not show up on any radar. ) but really liked the fit though.