What is the molar mass of compound represented by following structure formula?

For the cell reaction,

$$\mathrm{Zn}_{(\mathrm{s})}+2 \mathrm{Ag}_{(\mathrm{aq})}^{+} \longrightarrow \mathrm{Zn}_{(\mathrm{aq})}^{+2}+2 \mathrm{Ag}_{(\mathrm{s})}$$

Cell potential is less than $\mathrm{E}_{\text {cell }}^{\circ}$ by 0.0592 V at 298 K when