AIDS-146253 AIDS146253 Benzyl 2-(((1-((2-benzyl-8-(4-((tert-butoxycarbonyl)amino)butyl)-5-(1-tert-butoxyethyl)-11-(1H-indol-3-ylmethyl)-4,7,10,13-tetraoxo-15-phenyl-14-oxa-3,6,9,12-tetraazapentadec-1-anoyl)(methyl)amino)cyc\tlopentyl)carbonyl)amino)-3-phenylpropanoate NSC672458