How to get to the third element in casperjs?

Question

JavaScript

Hello! I have the following html structure

<table cellpadding="0" cellspacing="0" class="nomenc_table">
  <tbody><tr class="nomenc_tr_1">
    <td class="nomenc_title">Manufacturer</td>
    <td class="nomenc_text">A.C.C.&amp;S.</td>
  </tr>
  <tr class="nomenc_tr_2">
    <td class="nomenc_title">Description</td>
    <td class="nomenc_text">Flexible shaft coupling, Type C : clamp style, size : 17, left bore =  3 mm,right bore = 3 mm</td>
  </tr>
  <tr class="nomenc_tr_1">
    <td class="nomenc_title">Part number</td>
    <td class="nomenc_text">C172903000300</td>
  </tr>
  </tbody></table>

I'm trying to get this "C172903000300" value from the code using casperjs:

var npm = this.getHTML('td.nomenc_text:nth-child(2)');

It doesn't work, it returns the first value of similar ones. Tried last-child, still not right. Tell me how to get what you want?

Answer 1

Isn't it necessary to write td.nomenc_text:nth-child(3) to get the third value from the selection?
ZY XPath tried?