AIDS-138917 AIDS138917 De.psi.domycin N-(11,23-Diisobutyl-14-isopropyl-7-methyl-5,9,12,15,21,24-hexaoxodocosahydro-7H,17H-dipyridazino[6,1-c:6,1-i][1,4,7,10,13,16]oxapentaazacyclononadecin-8-yl)-2-(formylamino)-3-methylpentanamide NSC646668