<unk>  is an experimental antibiotic compound that may be effective against Gram-negative bacteria. If it can be developed into a human-compatible form it would be the first to come from an animal microbiome.
Darobactin
Testosterone enanthate
Testosterone furoate
Testosterone undecylenate
Bromoureide
7α-Thiomethylspironolactone
Testosterone decanoate
Desoxycorticosterone pivalate