5-(benzyloxy)-2-[({[(9H-fluoren-9-ylmethoxy)carbonyl]amino}acetyl)amino]-5-oxopentanoic acid (non-preferred name) InChI=1/C29H28N2O7/c32-26(31-25(28(34)35)14-15-27(33)37-17-19-8-2-1-3-9-19)16-30-29(36)38-18-24-22-12-6-4-10-20(22)21-11-5-7-13-23(21)24/h1-13,24-25H,14-18H2,(H,30,36)(H,31,32)(H,34,35 glutamic acid, N-[(9H-fluoren-9-ylmethoxy)carbonyl]glycyl-, 5-(phenylmethyl) ester