(2 points each) Write complete IUPAC names for the following compounds, including designations of stereochemistry:
a) 
(E)-7-bromo-3-cyclobutyl-6-methyl-2-heptene
(cis instead of E is also OK)
b) 
2-chloro-6,6-dimethyl-1,4-cycloheptadiene
2. (2 points each) Identify the isoprene units within the compounds below. Clearly encircle the carbons of each isoprene unit and indicate the "head" and "tail" ends of each unit.
a) 
b) 
3. (2 points) What is the molecular formula for caryophyllene (shown above) ?
C15 H24
Indicate locations where there are cis / trans isomers possible.
The double bond within the ring is trans but does have a cis isomer.
The ring juncture could be either cis or trans (the natural compound is trans).