AIDS-146282 AIDS146282 NSC672665 tert-Butyl 4-(8,20-dibenzyl-11-(1-tert-butoxyethyl)-17-(1H-indol-3-ylmethyl)-7,10,13,16,19,22-hexaoxo-6,9,12,15,18,21-hexaazaspiro[4.17]docos-14-yl)butylcarbamate