text: An<unk>  (INN; also known as rINN, for recommended<unk>  is the official<unk>  or generic<unk>  given to a pharmaceutical substance, as designated by the World Health Organization (WHO). The plethora of<unk> d proprietary preparations containing a given substance can lead to confusion about the identity of the active ingredient.
  INNs facilitate communication by providing a standard<unk>  for each substance. A similar role is played in chemistry by IUPAC<unk> s; however, these are less suited to common usage, being typically very long and unwieldy.
  WHO issues INN<unk> s in English, Latin, French, Russian, and Spanish; Arabic and Chinese versions, although not included in the original scheme, are now also being issued.
option_0: International Nonproprietary Name
option_1: Creative Commons license
option_2: United States Adopted Name
option_3: Designer drug
option_4: Repugnant market
option_5: Scientific method
option_6: Impact factor
option_7: Evidence-based medicine