methyl (R)-3-(3-bromophenoxy)-2-(((3aR,4S,6aS)-5-(2-methoxyacetyl)-2,2-dimethyltetrahydro-4H-[1,3]dioxolo[4,5-c]pyrrole-4-carboxamido)methyl)propanoate

(S)-3-(3-bromophenoxy)-2-(((tert-butyldimethylsilyl)oxy)methyl)propyl methanesulfonate