                            <span class="stringliteral">&#39;ARF&#39;</span>,  <span class="comment"># formamide</span></div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;                                              <span class="stringliteral">&#39;TL&#39;</span>,  <span class="comment"># thallium (i) ion</span></div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;                                              <span class="stringliteral">&#39;DXE