"comment"># magnesium ion</span></div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;                                              <span class="stringliteral">&#39;543&#39;</span>,  <span class="comment"># calcium ion, 6 waters plus ethanol coordinated</span></div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;                                              <span class="stringliteral">&#39;MSM&#39;</span>,  <span class="comment"># (methylsulfanyl)m