A solution containing $2 \mathrm{~g}$ of a non-volatile solute in $20 \mathrm{~g}$ of water boils at $373.52 \mathrm{~K}$. The molecular mass of the solute is ___________ $\mathrm{g} ~\mathrm{mol}^{-1}$. (Nearest integer)

Given, water boils at $373 \mathrm{~K}, \mathrm{~K}_{\mathrm{b}}$ for water $=0.52 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$