Write IUPAC names of the following:
(i) `CH_(2)= CH- underset(CH_(3))underset(|)CH-CH=CH-CH=CH_(2)`
(ii) `CH-= C- underset(CH_(3))underset(|)CH-CH =CH_(2)`

Explanation

To solve the problem of writing the IUPAC names for the given compounds, we will follow a systematic approach. Let's break down each compound step by step.

### (i) For the compound `CH2=CH-CH(CH3)-CH-CH=CH2`:

1. **Identify the Structure**:
- The structure consists of a chain of carbon atoms with double bonds and a methyl substituent.
- The chain can be drawn as follows:
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