ral">&#39;CYN&#39;</span>,  <span class="comment"># cyanide ion</span></div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;                                              <span class="stringliteral">&#39;PQQ&#39;</span>,  <span class="comment"># pyrroloquinoline quinone</span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;                                              <span class="stringliteral">&#39;PYJ&#39;</span>,  <span class="comment"># p