(4r)-4-[[(2s)-2-acetamido-3-carboxypropanoyl]amino]-5-[[(2s,3s)-1-[[(2s)-1-[(2s,4r)-2-[[[benzyl(methyl)carbamoyl]-propylamino]carbamoyl]-4-phenylmethoxypyrrolidin-1-yl]-3-methyl-1-oxobutan-2-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-5-oxopentanoic Acid