(2R,3R)-2-Hydroxy-3-methylpentanoic acid-valine -Phenylalanine-N-methylphenylalanine-Proline-alloisoleucine-N-methylvaline-Leucine-beta-hydroxy-N-methylvaline (2R,3R)Hmp-Val-Phe-MePhe-Pro-aIle-MeVal-betaHOMeVal AIDS-032231 AIDS032231 AUREOBASIDIN-U1