no">   71</span>&#160;                                              <span class="stringliteral">&#39;OS&#39;</span>,  <span class="comment"># osmium ion</span></div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;                                              <span class="stringliteral">&#39;MAN&#39;</span>,  <span class="comment"># alpha-d-mannose</span></div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;                                          