Which of the following is a conjugated diene? 
Definitions:
Latin
An ancient Italic language of the Roman Empire, used as the language of scholarship and administration until superseded by vernacular languages but surviving today in certain ecclesiastical and academic contexts.
Greek
Relating to Greece, its people, or their language.
Cyan/o
A prefix in medical terminology denoting the color blue, often used to describe conditions related to inadequate oxygen levels in the blood.
Iso-
A prefix indicating equality, uniformity, or similarity in certain scientific and technical contexts.
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