Nomenclature and Stereoisomers in Conjugated Dienes 14.39 Draw the structure of each compound. a. ( Z )-penta-1,3-diene in the s-trans conformation b. (2E,4Z)-1-bromo-3-methylhexa-2,4-diene c. (2E,4E,6E)-octa-2,4,6-triene d. (2E,4E)-3-methylhexa-2,4-diene in the s-cis conformation