      </span>
<span class="co">#&gt; [21] "alpha-amino acid (CHEBI:33704)"                    </span>
<span class="co">#&gt; [22] "organic heterocyclic compound (CHEBI:24532)"       </span>
<span class="co">#&gt; [23] "azole (CHEBI:68452)"                               </span>
<span class="co">#&gt; [24] "nitrogen molecular entity (CHEBI:51143)"           </span>
<span class="co">#&gt; [25] "amine (CHEBI:32952)"                               </span>
<span class="co">#&gt; [26] "oxygen molecular entity (CHEB