How many sets of equivalent carbon atoms are there for the following compound (C16H26O) ? 
Definitions:
Neurocognitive Disorder
A general term that refers to any condition affecting cognitive abilities, including memory, problem-solving, attention, and language, often due to neurological illness or injury.
Neurofibrillary Tangles
Abnormal accumulations of a protein called tau in the brain, associated with various neurodegenerative diseases including Alzheimer's disease.
Alzheimer's Patients
Individuals diagnosed with Alzheimer's disease, a progressive neurodegenerative disorder that affects memory, cognitive abilities, and behavior.
Emotional Disturbances
A broad category of mental health issues characterized by inappropriate behaviors, feelings, or thoughts, affecting an individual's ability to function effectively.
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