પદાર્થનું નામ ક્યુ છે.
$\begin{array}{*{20}{c}}
{O = CH - C{H_2} - CH - CHO} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,H - C = O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$