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Draw the mechanism of the Diels-Alder reaction between propenal and 2-methyl-1,3-butadiene.
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Open-Heart Surgery
A type of surgical procedure performed on the muscles, valves, or arteries of the heart requiring the chest to be opened.
Provident Hospital
A healthcare institution, potentially notable for its service or historical significance in a particular region.
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A topic sentence is essentially the line in a paragraph that encapsulates the primary concept or argument of that paragraph.
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