adapalene

Etymology
Probably from.

Noun

 * 1)  A retinoid C$28$H$28$O$3$ applied topically to the skin in the treatment of acne vulgaris. It is marketed under the trademark Differin and when used in combination with benzoyl peroxide, under the trademark Epiduo.

Translations

 * Finnish: adapaleeni
 * Portuguese: adapaleno
 * Russian: адапале́н