<<< omml
<?xml version="1.0" encoding="UTF-8"?>
<m:oMathPara>
  <m:oMathParaPr>
    <m:jc m:val="center" />
  </m:oMathParaPr>
  <m:oMath>
    <m:sSup>
      <m:e>
        <m:r>
          <m:rPr>
            <m:sty m:val="p" />
          </m:rPr>
          <m:t>π</m:t>
        </m:r>
      </m:e>
      <m:sup>
        <m:r>
          <m:rPr>
            <m:sty m:val="p" />
          </m:rPr>
          <m:t>2</m:t>
        </m:r>
      </m:sup>
    </m:sSup>
  </m:oMath>
</m:oMathPara>

>>> native
[ ESuper (EIdentifier "\960") (ENumber "2") ]