Pentacosanic acid С<sub>24</sub>Н<sub>49</sub>СООН
<a href="//commons.wikimedia.org/wiki/User:%D0%A5%D0%BE%D1%80%D0%B5%D0%B2_%D0%A1%D0%B5%D1%80%D0%B3%D0%B5%D0%B9" title="User:Хорев Сергей">Хорев Сергей</a>
2012-03-14
<span class="int-own-work" lang="en">Own work</span>