Skeletal formula of <a href="https://en.wikipedia.org/wiki/glucuronic_acid" class="extiw" title="w:glucuronic acid">glucuronic acid</a> (β-<small>D</small>-glucopyranuronic acid).
<a href="//commons.wikimedia.org/wiki/User:Yikrazuul" title="User:Yikrazuul">Yikrazuul</a>
<span class="int-own-work" lang="en">Own work</span>