1-[1(S)-[5(S)-[N-[3-Cyclohexyl-2(R)-methylpropionyl]-N-methyl-L-valylamino]-6,6-dimethyl-4-oxo-2(R)-(pivaloylmethyl)heptanamido]-1-[N-[1(R)-ethyl-2,2-dimethylpropyl]carbamoyl]methyl]cyclopentane-1-carboxylic acid
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