What are the main structural differences between molecules of estradiol (the predominant sex hormone in females, albeit present in males at lower levels) and testosterone (the principal male sex hormone and an anabolic steroid albeit it is also synthesized by females)? 
Definitions:
Simon LeVay
A neuroscientist known for his research into the biology of sexual orientation, particularly for a 1991 study on brain structure differences between homosexual and heterosexual men.
Firm Deadlines
Specific, fixed dates or times by which tasks or objectives must be completed, allowing for little to no flexibility.
End Of The Semester
marks the conclusion of an academic period in schools, colleges, or universities, typically characterized by final exams and project submissions.
Hypothalamus
A small region of the brain's base that plays a crucial role in the release of hormones, regulation of body temperature, and maintenance of daily physiological cycles.
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