Write the structural formula of the compounds having the following IUPAC names.
(i) 5-methyl hept-3-enal
(ii) 3-hydroxy-6, 6-dimethyl hept-4-ene-1-oic acid.

Explanation

To write the structural formulas for the given IUPAC names, we will follow the steps outlined in the video transcript. Here's a step-by-step solution for each compound:

### (i) 5-methyl hept-3-enal

1. **Identify the Parent Chain**: The name indicates that the parent chain is "hept," which means it contains 7 carbon atoms.
- Structure: C-C-C-C-C-C-C

2. **Number the Carbon Chain**: Number the carbon atoms from the end closest to the functional group. Since "enal" indicates an aldehyde, we start numbering from the aldehyde end.
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