<unk>  is a cyclized analogue of orphenadrine, diphenhydramine, and tofenacin, with each of these compounds different from one another only by the presence of one or two carbons. The ring system of<unk>  is a benzoxazocine system.
Nefopam
Setiptiline
Lofexidine
Ivabradine
Fenoldopam
Verapamil
Alvimopan
Iofetamine 