methyl (3S)-3-[[[(2R,3R,6S)-2-[(2S)-2-aminochloranuidyl-3-phenylpropanoyl]oxy-3-benzyl-6-[2-[2-(2-methoxyethoxy)ethoxy]ethoxycarbonylamino]-7,7-dimethyl-5-oxooctyl]-[(4-pyridin-2-ylphenyl)methyl]amino]carbamoyl]-4,4-dimethylpentanoate;methyl (3S)-3-[[[(2R,3R,6S)-3-benzyl-6-[2-[2-(2-methoxyethoxy)ethoxy]ethoxycarbonylamino]-7,7-dimethyl-2-[(2S)-2-[[(2S)-4-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]pentanoyl]amino]-3-phenylpropanoyl]oxy-5-oxooctyl]-[(4-pyridin-2-ylphenyl)methyl]amino]carbamoyl]-4,4-dimethylpentanoate;(2R)-4-methyl-2-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]pentanoic acid