3. Consider the following molecule 1. a) Assign descriptors (R, S, E and Z) to all elements of stereochemistry in 1. b) Draw all stereoisomers of 1. c) Using the

structures from b (you may use each structure more than once), identify: i.a pair of enantiomers. 11.a pair of diastereomers. iii.a meso compound111.