What is the stereochemistry at the 3 and 5 positions and what are the other SAR features?
a) The stereochemistry at 3, 5 positions is cis for both.
b) SAR features include a bulky group at the 3 position and a hydrophobic group at the 5 position.
c) The stereochemistry at 3, 5 positions is trans for both.
d) SAR features include a polar group at the 3 position and a positively charged group at the 5 position.