11-[(1-Nitro-9-oxo-9,10-dihydro-acridine-4-carbonyl)-amino]-undecanoic acid 5-acetylamino-4-{1-[1-(1-benzyloxycarbonyl-3-carbamoyl-propylcarbamoyl)-2-methyl-propylcarbamoyl]-ethoxy}-3-hydroxy-tetrahydro-pyran-2-ylmethyl ester AIDS-137642 AIDS137642 NSC642600