Which of the following is not a resonance structure of acetic anhydride? 
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Overwhelmed
A state of being unable to cope with the amount or intensity of demands, emotions, or stimuli faced.
Illustrators
Gestures that are used to clarify a point, such as pointing when giving directions.
Ebbinghaus Curve
A mathematical formula that describes the rate at which information is forgotten over time, illustrating that memory retention decreases exponentially with time.
Business Associates
Individuals or entities engaged in commercial relationships, often working together to achieve mutual business goals.
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