17-Amino-29-(2-amino-2-oxoethyl)-9,26-bis(3-amino-3-oxopropyl)-3-sec-butyl-32-(4-hydroxybenzyl)-23-(hydroxymethyl)-6,20-diisopropyl-1,4,7,10,18,21,24,27,30,33-decaoxotetratriacontahydro-1H-pyrrolo[2,1\t-p][1,2,5,8,11,14,17,20,23,26,29,32]dithiadecaazacyclopentatriacontine-12-carboxylic acid AIDS-136899 AIDS136899 NSC640124