1. Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA
2. Drug Discovery Science & Technology, Discovery Research & Development, AbbVie, Inc., 1 North Waukegan Rd, North Chicago, Illinois 60064-1802, USA
3. Department of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706, USA
4. Drug Hunter, Inc., 13203 SE 172nd Ave, Suite 166 PMB 2019, Happy Valley, Oregon, 97086, USA