Benzophenone  $\underset{\begin{array}{l}ii)H_{2}S{O}_4.H_{2}O.heat\\ iii)1eqB{r}_2/FeB{r}_3\end{array}}{\overset{i)N{H}_{2}OH.HCl}{\to }}\underset{\left(S\right)}{Major}$   What is the molecular wt of ‘S’

(At. wt: C = 12, H = 1, O = 16, N = 14, Br = 80)