(S)-3-{4-Cyclopentyl-2-[(S)-2-(2-ethyl-butanoylamino)-3,3-dimethyl-butanoylamino]-4-oxo-butanoylamino}-N-(3,3-dimethyl-butyl)-succinamic acid 2-Ethylbutanoyl-Tbg-NHCH(2-cyclopentyl-2-oxodecyl)-CO-Asp-NHCH2CH2C(CH3)3 AIDS-164986 AIDS164986