27601-29-2 Carbamic acid, (2-((2,5-dioxo-1-pyrrolidinyl)oxy)-2-oxo-1-((4-(phenylmethoxy)phenyl)methyl)ethyl)-, 1,1-dimethylethyl ester, (S)- EINECS 248-557-0 tert-Butyl (S)-(2-((2,5-dioxo-1-pyrrolidinyl)oxy)-2-oxo-1-((4-(benzyloxy)phenyl)methyl)ethyl)carbamate