Affiliation: | 1. Department of Medicinal Chemistry and Structural Biology, Merck Research Laboratory, WP 14-3, PO Box 4, West Point, PA 19486, United States;2. Antiviral Research, Merck Research Laboratory, PO Box 4, West Point, PA 19486, United States;3. Vaccines and Biologics Research, Merck Research Laboratory, PO Box 4, West Point, PA 19486, United States;4. Drug Metabolism, Merck Research Laboratory, PO Box 4, West Point, PA 19486, United States |