Consider the following multistep synthesis. 
What is the structure of intermediate A? 
Definitions:
Dopamine
A neurotransmitter associated with movement, attention, learning, and the brain’s pleasure and reward system.
Serotonin
A neurotransmitter critical in many physiological processes, including mood regulation, digestion, and sleep.
Conduct Disorder
A mental health disorder diagnosed in childhood or adolescence characterized by a repetitive and persistent pattern of behavior that violates societal norms or the basic rights of others.
Comorbidity
The simultaneous presence of two or more diseases or medical conditions in a patient.
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