Where is the important chiral center(s)?What health effects if any are of concern?

Escitalopram (Lexapro) vs. Citalopram (Celexa)

Choose ONE of the following topics and write a 4-5 page paper (minimum) with citations in MLA or APA format. Please use 12 point font, 1 inch margins. Address in your paper the following:
a. What is the structure, traditional name and IUPAC name of the molecule? Provide a picture from the web (citation required) or draw by hand or with a program.
b. Label your molecular drawing(s) with the CIP rankings and indicate the R or S assignment for each chiral center.
c. What does the compound/molecule do in each enantiomeric form?
d. Why is drug/molecule chirality important?
e. Where is the important chiral center(s)?
f. What health effects if any are of concern?
g. Is it possible to separate the enantiomers to make a single enantiomer drug?