How many hydrogen atoms are needed to complete the following hydrocarbon structure? 
Definitions:
Occurrence
An event or instance that happens or takes place.
Flu
A contagious respiratory illness caused by influenza viruses, characterized by symptoms like fever, cough, and body aches.
Ranked
Organized or categorized in order based on a hierarchy or scale.
Olympics
An international multi-sport event divided into summer and winter games, where thousands of athletes from around the world compete.
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