上游原料
4-Nitrophenol; p-NitrophenolN-[(benzyloxy)carbonyl]glutamic acidbenzyl 2,6-dioxotetrahydro-2H-pyran-3-ylcarbamate5-(benzyloxy)-4-[[(benzyloxy)carbonyl]amino]-5-oxopentanoic acid1-benzyl 5-(4-nitrophenyl) 2-[[(benzyloxy)carbonyl]amino]pentanedioate2-ammonio-1-ethanesulfonate2-[(5-(benzyloxy)-4-[[(benzyloxy)carbonyl]amino]-5-oxopentanoyl)amino]-1-ethanesulfonic acid
