(4R)-3-[(2S,3S)-2-hydroxy-3-{[(3-hydroxy-2-methylphenyl)carbonyl]amino}-4-phenylbutanoyl]-5,5-dimethyl-N-(2-methylbenzyl)-1,3-thiazolidine-4-carboxamide
(4r)-3-[(2s,3s)-2-hydroxy-3-{[(3-hydroxy-2-methylphenyl)carbonyl]amino}-4-phenylbutanoyl]-5,5-dimethyl-n-(2-methylbenzyl)-1,3-thiazolidine-4-carboxamide