3. Teriflunomide is shown below. It is sold under the brand name Aubagio. Teriflunomide was investigated in the Phase III clinical trial TEMSO as a medication for multiple sclerosis (MS). The study was completed in July 2010 . However after 2 years of positive results. the subsequent TENERE head-to-head comparison trial reported that "although permanent discontinuations [of therapy] were substantially less common among MS patients who received teriflunomide compared with interferon beta-1a, relapses were more common with teriflunomide." Complete the following table for the atoms indicated with a number in the following molecule