1 C3M N-[(2r,3s)-3-amino-2-hydroxy-4-phenylbutyl]naphthalene-2-sulfonamide 1.000 2 C4M N-[(2r,3s)-3-amino-2-hydroxy-4-phenylbutyl]-4-methoxy-2,3,6-trimethylbenzenesulfonamide 0.710