Write IUPAC names of the following compounds:
`CH_3CH=CHCH_2CH=CHunderset(C_2H_5)underset(|)(CH)CH_2CH=CH_2`

Explanation

`{:(CH_(3)(CH_(2))_(4)CH(CH_(2))_(3)CH_(3)),(" |"),(" "CH_(2) - CH(CH_(3))_(2)):}`
or `{:(overset(10)(C)H_(3) overset(9)(C)H_(2) overset(8)(C)H_(2) overset(7)(C)H_(2) overset(6)(C)H_(2)overset(5)(C)Hoverset(4)(C)H_(2)overset(3)(C)H_(2)overset(2)(C)H_(2)overset(1)(C)H_(3)),(" |"),(" "overset(1)(C)H_(2) - overset(2)(C)H - CH_(3)),(" |"),(" 5-(2-methylpropyl) decane " CH_(3)):}`