It is unlawful for any unauthorized or unlicensed person, to solicit or to cause the solicitation of any person over the age of eighteen years old for the sale, purchase or transfer of a controlled substance without prescription in a public place or in any place open to the public or exposed to public view. The term controlled substance shall mean all substances included within Health and Safety Code Section 1100F. (Ord. 5453-NS § 2, 1982)