The chemical structure of β-3-Deoxy-D-manno-oct-2-ulosonic acid (β-Kdo).
<a href="//commons.wikimedia.org/wiki/User:Ninjatacoshell" title="User:Ninjatacoshell">Ninjatacoshell</a>
<span class="int-own-work" lang="en">Own work</span>