The molecule on the left has multiple 1,3-dienes (4 in total), but only one ends upreacting in a Diels-Alder reaction. Identify which diene ends up reacting, predict the product when it reacts with the dienophile partner (including stereochemistry),and explain why only that 1,3-diene ends up reacting. (10 marks)

Fig: 1

Fig: 2