Give the IUPAC names of :
(i) `{:(CH_(3)-CH-C-CH-CH_(3)),(" |"" ||"" |"),(" "Br" "O" "CH_(3)):}`
(ii) `{:(CH_(3)-CH-C-CH-CH_(3)),(" |"" ||"" |"),(" "NO_(2)" "O" "CH_(3)):}`
(iii) `(CH_(3))_(3)C-CH_(2)-CH_(2)-Cl`
(iv) `{:(CH_(3)-CH-CH_(2)-CH_(3)),(" |"),(" "Br):}`

Explanation

To derive the IUPAC names for the given organic compounds, we will follow systematic steps including identifying the longest carbon chain, numbering the carbon atoms, identifying substituents, and applying the appropriate naming conventions.

### (i) Structure:
`{:(CH_(3)-CH-C-CH-CH_(3)),(" |"" ||"" |"),(" "Br" "O" "CH_(3)):}`

**Step 1: Identify the longest carbon chain.**
- The longest chain consists of 5 carbon atoms.

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