(8S,11S)-11-({(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}amino)-8-[(1S)-1-methylpropyl]-2-oxa-6,9-diazabicyclo[11.2.2]heptadeca-1(15),13,16-triene-7,10-dione AIDS-051287 AIDS051287 Macrocylic deriv.