$\begin{array}{*{20}{c}}
{CH(OH)COONa} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{CH(OH)COOK\,\,\,\,}
\end{array}$
(image) $\xrightarrow[{Pd/carbon,\,ethanol}]{{{H_2}\,(gas,\,\,1\,\,atmosphere)}}\,A$ શું હશે ?