1 JE2 (4r)-3-{(2s,3s)-2-hydroxy-3-[(3-hydroxy-2-methylbenzoyl)amino]-4-phenylbutanoyl}-5,5-dimethyl-N-(2-methylbenzyl)-1,3-thiazolidine-4-carboxamide 1.000 2 K57 (4r)-N-tert-butyl-3-{(2s,3s)-2-hydroxy-3-[(3-hydroxy-2-methylbenzoyl)amino]-4-phenylbutanoyl}-5,5-dimethyl-1,3-thiazoli dine-4-carboxamide 0.773