Which of the following heterocycles is not aromatic? 
Definitions:
Demographic Factors
Characteristics of a population used in market research to segment consumers, such as age, gender, income, education, and marital status.
Millennials
A demographic cohort following Generation X and preceding Generation Z, typically born between the early 1980s and mid-1990s to early 2000s, known for their familiarity with communications, media, and digital technologies.
Global Marketing
A marketing strategy that consciously addresses customers, markets, and competition throughout the world.
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A specific area or segment within a larger space, designated for a particular purpose or activity.
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