1-{(2S)-2-[(6S,9S,12S)-9-(2-Amino-2-oxoethyl)-6-(4-hydroxybenzyl)-4,7,10-trioxo-2-oxa-5,8,11-triazabicyclo[12.2.2]octadeca-1(16),14,17-trien-12-yl]-2-hydroxyethyl}-L-prolylisoleucyl-L-valinamide AIDS-050796 AIDS050796 Tyr-Asn-Phe-Pro-Ile-Val macrocylic deriv.