Structure of Amphetamine. (R)-amphetamine or Levo-amphetamine (left) and (S)-amphetamine or Dextro-amphetamine (right).
<a href="//commons.wikimedia.org/wiki/User:Nothingserious" title="User:Nothingserious">Nothingserious</a>
<span class="int-own-work" lang="en">Own work</span>