Definition: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Input: LDA is used to transform propargyl diol into one of these compounds in the Whiting reaction. A useful one of these compounds is synthesized using zinc chloride to combine trimethylsilyl chloride with methoxybutenone. The namesake value of these compounds is expressed as the mass of iodine equivalent to the amount of (*) maleic anhydride reacting with a unit mass of one of these. The cumulated type of these compounds are less stable than other types. Electrophilic addition can result in both 1,2 and 1,4 additions in the conjugated type of these molecules. That type also undergoes a type of reaction that follows the endo addition rule and forms cyclohexenes, the Diels-Alder reaction. For 10 points, name these hydrocarbons that contain two carbon-carbon double bonds.
Output:
Science