3(R)-{2-[(3S)-(tert-butyldimethylsilanyloxymethyl)-2-oxo-5-phenyl-2,3-dihydrobenzo[e][1,4]diazepin-1-yl]acetylamino}-4-samicarbazone-butyric acid tert-butyl ester

N-(fluorenylmethyloxycarbonyl)-L-aspart-α-al β-tert-butyl ester