1-benzyl 5-tert-butyl N-[(9H-fluoren-9-ylmethoxy)carbonyl]glutamate InChI=1/C31H33NO6/c1-31(2,3)38-28(33)18-17-27(29(34)36-19-21-11-5-4-6-12-21)32-30(35)37-20-26-24-15-9-7-13-22(24)23-14-8-10-16-25(23)26/h4-16,26-27H,17-20H2,1-3H3,(H,32,35 glutamic acid, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-, 5-(1,1-dimethylethyl) 1-(phenylmethyl) ester