Synthesis of amikacin, as outlined by the original makers here: <a rel="nofollow" class="external free" href="https://www.jstage.jst.go.jp/article/antibiotics1968/25/12/25_12_695/_pdf">https://www.jstage.jst.go.jp/article/antibiotics1968/25/12/25_12_695/_pdf</a>
<a href="//commons.wikimedia.org/wiki/User:Prof._Squirrel" title="User:Prof. Squirrel">Persia Salehi</a>
<span class="int-own-work" lang="en">Own work</span>