oxybutynin

Etymology
Probably from.

Noun

 * 1)  An antispasmodic and anticholinergic drug C22H31NO3 administered transdermally as a skin patch or orally in the form of its hydrochloride C22H31NO3·HCl to relax the smooth muscles of the bladder in the treatment of urge incontinence, frequent urination, and urinary urgency.