The condensed structural formula for 4-bromo-2-pentanone is:

CH₃CH₂COCHBrCH₃

Here's how to break it down:

* CH₃CH₂CO: This represents the ketone functional group (C=O) at the second carbon of the pentane chain.

* CHBrCH₃: This represents the bromo substituent at the fourth carbon of the pentane chain.

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