(3S,4aS,8aS)-N-(tert-Butyl)-2-[(2R,3S)-2-hydroxy-4-phenyl-3-({(2S)-2-[(pyrazin-2-ylcarbonyl)amino]-2-[(3R)-tetrahydrofuran-3-yl]acetyl}amino)butyl]decahydroisoquinoline-3-carboxamide AIDS-192503 AIDS192503