Question

Some molecules I'm having trouble finding the prefered IUPAC name for. This must be exactly correct.

Answer 1

(4E,2S)-5-cyclopentyl-2-methylhex-4-enenitrile

Now I feel that the (4E,2S) should be simply (E,S) since they are obviously distinct from each other. However I'm not sure.

Answer 2

I found it! The answer is 6c on this page: http://quimica.udea.edu.co/~pipelion/organica1/iupac_rules_jce.pdf

The numbers aren't only included, they're used to order them! It should be:

(2S,4E)