AIDS-130420 AIDS130420 Butanoic acid, 2,3-dihydroxy-2-(1-methylethyl)-, (1,3,3a,3b,4,4a,5,7,7a,8,8a,8b-dodecahydro-1,3,5,7-tetraoxo-4,8-ethenopyrrolo[3',4':3,4]cyclobut[1,2-f]isoindole-2,6-diyl)bis(methylene) ester NSC600018