(a)[1]
On the abscisic acid diagram, mark every chiral carbon atom with an asterisk (*).
(b)[1]
When abscisic acid is reacted with excess $\text{NaBH}_4$, give the molecular formula of the organic product obtained.
(c)
When abscisic acid is treated with excess hot, concentrated, acidified $\text{KMnO}_4$, three separate carbon-containing products are produced.
(c(i))[1]
Draw the skeletal formula of the carbon-containing product with the greatest molecular mass.
(c(ii))[2]
Identify the carbon-containing product that has the smallest molecular mass. Explain the way in which this product is formed.
(c(iii))[1]
Identify the third carbon-containing product in this reaction by writing its displayed or structural formula.