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Which one of the following structures has the IUPAC name 3 -ethynyl- 2 -hydroxy- 4 -methylhex- 3 -en- 5 -ynoic acid?

Correct answer

3

Step-by-step solution

3 -ethynyl- 2 -hydroxy- 4 -methylhex- 3 -en- 5 -ynoic acid

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