Q.
The IUPAC name of the following compound,
$ [{{(C{{H}_{3}})}_{2}}CH-C{{H}_{2}}-CH=CH-CH=CH-\underset{\begin{smallmatrix} | \\ {{C}_{2}}{{H}_{5}} \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}} $ is
Solution: