AIDS-051268 AIDS051268 Macrocylic deriv. N-{(2R)-2-Hydroxy-2-[(8S,11S)-8-isopropyl-6,9-dioxo-2-oxa-7,10-diazabicyclo[11.2.2]heptadeca-1(15),13,16-trien-11-yl]ethyl}-L-phenylalanyl-L-isoleucyl-L-valinamide