How many chirality centers are present in the compound below? 
Definitions:
Severe Depression
A major mental health condition marked by intense feelings of sadness, worthlessness, and a lack of interest or pleasure in activities, significantly impairing daily functioning.
Maintenance Therapy
Ongoing treatment aimed at stabilizing a patient's condition and preventing relapse after initial successful treatment of a disease.
Tricyclic
A class of antidepressant drugs that work by inhibiting the reuptake of certain neurotransmitters, thereby increasing their levels in the brain.
MAO Inhibitor
An antidepressant drug that prevents the action of the enzyme monoamine oxidase.
Q10: What is the IUPAC name of this
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Q78: The compounds below are constitutional isomers. <img