AIDS-146276 AIDS146276 NSC672655 tert-Butyl 4-(3,15-dibenzyl-6-(1-tert-butoxyethyl)-12-(1H-indol-3-ylmethyl)-2,5,8,11,14,17-hexaoxodocosahydrocyclopenta[q][1,4,7,10,13,16]hexaazacyclononadecin-9-yl)butylcarbamate