Consider the structural diagram of the operative part of a biologically active molecule. Which of the following coenzymes has the given structure? 
Definitions:
Tidal Volume
The volume of air that is inhaled or exhaled in a normal breath at rest.
Respiratory Capacities
the combined volumes of air that the lungs are capable of holding, considered in different phases of respiration.
Vital Capacity
The maximum amount of air a person can expel from the lungs after a maximum inhalation.
Regular Exercise
Routine physical activity intended to improve or maintain physical fitness and overall health.
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