157445-98-2 Butanoic acid, 4-(((1S,2R)-2-hydroxy-3-((3-methylbutyl)(phenylsulfonyl)amino)-1-(phenylmethyl)propyl)amino)-2,2,3-trimethyl-4-oxo-, (3R)- Butanoic acid, 4-((2-hydroxy-3-((3-methylbutyl)(phenylsulfonyl)amino)-1-(phenylmethyl)propyl)amino)-2,2,3-trimethyl-4-oxo-, (1S-(1R*(S*),2S*))- SC 98A