(2R,3S)-3-Hydroxy-2-methyl-3-phenyl-propionic acid (1R,2S)-2-[(2-methyl-benzyl)-(2,4,6-trimethyl-benzyl)-amino]-1-phenyl-propyl ester

(E)-(2R,3S)-3-Hydroxy-2,4-dimethyl-hex-4-enoic acid (1R,2S)-2-[(2-methyl-benzyl)-(2,4,6-trimethyl-benzyl)-amino]-1-phenyl-propyl ester

(R)-2-((S)-Hydroxy-phenyl-methyl)-butyric acid (1R,2S)-2-[(2-methyl-benzyl)-(2,4,6-trimethyl-benzyl)-amino]-1-phenyl-propyl ester

(2R,3R)-3-Hydroxy-2-methyl-octanoic acid (1R,2S)-2-[(2-methyl-benzyl)-(2,4,6-trimethyl-benzyl)-amino]-1-phenyl-propyl ester