What is the IUPAC name of mesityl oxide?

1. 4-methylpent -oxo-3-en
2. 2-methylpent-4-oxo-ene
3. 2-methylpent-2-en-4-one
4. 4-methylpent-3-en-2-one

Asked in: MHT CET 2022 (07 Aug Shift 2)

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