9-Benzyl-4-hydroxy-N-(5-hydroxy-6-(hydroxyimino)-5,6-dihydro-4H-cyclopenta[b]thien-4-yl)-6-isobutyl-2,2-dimethyl-7-oxo-2lambda~5~,5,8-triaza-3-boradecan-10-amide AIDS-158908 AIDS158908 NSC681951