Structural formula of the chemical compound <a href="https://en.wikipedia.org/wiki/2-butanol" class="extiw" title="w:2-butanol">2-butanol</a>
<a href="//commons.wikimedia.org/wiki/User:Slashme" title="User:Slashme">Slashme</a>
Re-drawn from scratch with chemtool and inkscape