(2S,3R)-N(4)-((S)-2,2-dimethyl-1-methylcarbamoylpropyl)-N(1)-hydroxy-2-hydroxymethyl-3-(4-methoxyphenyl)succinamide
(2s,3r)-n(4)-((s)-2,2-dimethyl-1-methylcarbamoylpropyl)-n(1)-hydroxy-2-hydroxymethyl-3-(4-methoxyphenyl)succinamide