2-[((2S)-1-{(2S)-2-[(3S,6S)-4,7-Diaza-6-(carbamoylmethyl)-12-oxa-5,8-dioxobicyclo[11.2.2]heptadeca-1(15),13,16-trien-3-yl]-2-hydroxyethyl}pyrrolidin-2-yl)carbonylamino]-N-((1S)-1-carbamoyl-2-methylpropyl)(2S,3S)-3-methylpentanamide AIDS-050806 AIDS050806 Asn-Phe-Pro-Ile-Val Macrocylic deriv.