You Have Nitrobenzene (A).
When A Is treated with Tin in HCl it yields a compound B.
B Is Treated with Acetyl Chloride to give C. \
C is treated with Concentrated Sulphuric Acid to give D.
D Is treated with Nitric Acid to give E.
E Is treated with Dilute Sulphuric Acid And Heated to give F.
Finally F Is treated Aqueous KOH To give G.
Enter Molecular Mass of the compound G to the nearest integer