When an oxime is treated with trifluoroperoxyacetic acid,it yields:

Identify the major product $A$ in the following reaction:
[Image of the reaction: $A$ substituted tetralin derivative with a ketone group,a chlorine atom,and a nitro group,reacting with $N_2H_4/KOH/H_2O$ (Wolff-Kishner reduction)]

Which is the major product of the following reaction?

Milk can be preserved by adding a few drops of

Reduction of the lactol $S$ with sodium borohydride $(NaBH_4)$ gives:

The final product $A$ formed in the following multistep reaction sequence is: