N,N-Bis[(1,1-dimethylethoxy)carbonyl]-2,4-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-D-phenylalanine 1,1-dimethylethyl ester

N,N-Bis[(1,1-dimethylethoxy)carbonyl]-2,4-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-D-phenylalanine 1,1-dimethylethyl ester