The last step in alcohol fermentation involves the reduction of acetaldehyde and the oxidation of NADH.What is the structure of the reduction product? 
Definitions:
Agonists
Chemicals that bind to and activate specific receptors in the body, mimicking the effects of natural substances.
Antagonists
Substances or drugs that block or dampen the action of neurotransmitters or hormones, reducing their effects on the body.
Psychoactive Drugs
Psychoactive drugs are substances that affect the brain and change perception, mood, consciousness, cognition, or behavior.
Epinephrine
Also known as adrenaline, a hormone and neurotransmitter involved in the body's fight-or-flight response, increasing heart rate and blood flow.
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