Methyl N-[(2s)-1-[2-[(2s,3s)-2-hydroxy-3-[[(2s)-4-hydroxy-2-(methoxycarbonylamino)-3,3-dimethylbutanoyl]amino]-4-phenylbutyl]-2-[(4-pyridin-2-ylphenyl)methyl]hydrazinyl]-3,3-dimethyl-1-oxobutan-2-yl]carbamate
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