上游原料
ethyl 1,3-dioxo-1,3-dihydro-2H-isoindole-2-carboxylate; N-Carbethoxyphthalimide2-(2-aminoethoxy)-1-ethanol2-[2-(2-hydroxyethoxy)ethyl]-1H-isoindole-1,3(2H)-dione2-[2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)ethoxy]acetic acidbenzyl (4R)-5-amino-4-[[(2S)-2-aminopropanoyl]amino]-5-oxopentanoatebenzyl (4R)-5-amino-4-[[(2S)-2-([2-[2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)ethoxy]acetyl]oxy)propanoyl]amino]-5-oxopentanoate
