(3S,4aS,8aS)-N-(tert-Butyl)-2-{(2R)-2-hydroxy-2-[(11S,14S)-11-isopropyl-9,12-dioxo-2,6-dioxa-10,13-diazabicyclo[14.2.2]icosa-1(18),7,16,19-tetraen-14-yl]ethyl}decahydroisoquinoline-3-carboxamide AIDS-059191 AIDS059191 CO-Val-Phe-psi [CH(O)CH2]-DIQ-NH-tBu 18-member macrocylic