Give the IUPAC names of the compound
`ClCH_(2) CH = CH CH_(2) Br`

Explanation

`Cl CH_(2) CH = CH CH_(2) Br to {:(Cl - CH_(4) - CH = CH - CH_(2) - Br) , (" "(4) " " (3) " " (2) " " (1)) , ("IUPAC name : 1 - Bromo 4-Chloro , 2- Butene"):}`