The condensed structural formula of methyl pentanoate is CH₃(CH₂)₄COOCH₃.

Here's how it's derived:

* Pentanoate: This indicates a five-carbon chain (pent-) with a carboxyl group (-COOH) at the end.

* Methyl: This tells us that the hydrogen on the carboxyl group (-COOH) has been replaced with a methyl group (CH₃).

Therefore, the condensed structural formula is:

* CH₃(CH₂)₄COOCH₃

Let me know if you'd like to see the expanded structural formula!